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Interview with Embedded Computing Design: Connected Device Security

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With the rapid growth of the Internet of Things, devices have become more vulnerable in recent years. Even with highly publicized security breaches (medical devices, web cams, vehicles, building automation equipment, etc.), it seems like security is still on the lower end of awareness and focus. And for those device manufacturers who are security-minded, implementation is not trivial.

Mike Rohrmoser, Digi’s Director of Product Management for Embedded Systems, spoke with Embedded Computing Design at NXP FTF 2016 about concerns surrounding connected devices. He emphasized that security requirements will change over time, so it’s imperative that device manufacturers make sure their products have a chance to support those changes.

Listen to the full interview to hear Mike’s thoughts on the state of connected device security and how Digi is addressing these deficiencies with a secure software framework and security architecture called Digi TrustFence™.

Full interview: Is the hysteria around connected device security warranted?>>

Small-Footprint Remote-Sensor Monitoring: The Future Is Now

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When you’re working for a major petrochemical company, inventory control isn’t merely a financial matter. That’s because a slow, undetected leak of a dangerous chemical substance can ultimately lead to significant safety concerns, and environmental/regulatory issues that can cost millions of dollars.

A major metro’s DPW team might be responsible for ensuring thousands of streets are operational on a 24×7 basis. Outages translate into lapses in public safety and unnecessary taxpayer expense. But how can they keep tabs on all of those fixtures?

Unfortunately, for organizations like these – and thousands of others facing the same dilemmas – the only feasible recourse has been to put technicians and repair teams on the road, logging thousands of miles each year to remote sites to manually check simple metrics like air quality, tank levels, pipeline pressures, valve statuses, light fixtures, and more. It’s a cost and headache that they’re eager to avoid – but the data is too important to avoid or ignore. In fact, the more difficult the data is to capture, the more valuable it often is.

Remote-sensor monitoring through wireless networks is the obvious – and long-sought – alternative, but too many barriers have prevented wide-scale adoption. Chief among these roadblocks: power consumption. Solar-powered wireless gateways are still not cost-feasible for industrial applications. Battery-powered cellular devices are another option, but until recently the costs of carriers’ rigid consumer-focused data plans (and the expense of the devices themselves) made them suitable for only a small subset of applications. Low-power WiFi networks and internal batteries can provide some coverage, but they require RF and network engineers to design, install, and maintain – expertise that is in high demand.

The Tide Is Turning

Fortunately, we’re seeing important changes that are making low- or no-power remote monitoring easy and cost-effective. First, cellular operators are recognizing that $30-50/mo. consumer data plans are a non-starter in the industrial space. Some carriers are now offering data plans of as little as 250 KB and compelling configurations and bundles that have driven prices down to $1-3/mo. High-volume customers are even seeing sub-$1 pricing.

Device costs have also plunged. Cellular gateways are now less than $20 for 2G and 3G modules. Similar dynamics are likely in the LTE space soon. And as M2M-friendly LTE CAT standards take hold in the coming years, we’ll see lower device costs, lower operating costs, and longer battery life – all with no need for a local wireless network to carry backhaul traffic.

Ultimately, it means we’re now able to deploy the small-footprint, no/low-power remote-sensor network that skips the truck rolls, cuts the costs, and increases visibility across the company’s entire asset portfolio. The new Digi Connect Sensor battery-powered cellular gateway lets companies and agencies finally deploy a no-infrastructure remote monitoring solution in virtually any harsh or remote environment.

Here’s more about the features of the Digi Connect Sensor:

  • Flexible power sources – Use a long-lasting (two to three years), non-rechargeable battery, power-saving sleep mode, and the option to draw power external sources (including solar) while using the internal battery as a backup.
  • Cellular choice – For global connectivity, Connect Sensor supports 3G HSPA+ with 2G fallback. North American users can also choose an LTE CAT 1 version.
  • Supports LTE CAT 1 – With support for LTE CAT 1, the band specifically created for IoT and M2M communications, Connect Sensor devices are highly efficient, consume less power, and are optimized for data transfer.
  • Sensor variety and flexibility – Connect Sensor can work with virtually any 4/20mA, Analog Out, Digital Out, or Pulsed Output sensor, and can power multiple external sensors, eliminating the need for external supplies or batteries.
  • Enterprise-grade security – You can implement security at the device, transport, and platform level.
  • Appropriate for harsh environments – A weatherproof NEMA 4 enclosure protects your sensors from the elements. It also features ATEX Group 2 and UL Class 1 Division 2 ratings.

Interested in learning more? Here are a number of resources to get you started:

Are You Ready to Migrate to 4G?

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4GThe move to 4G is underway in North America, Europe, and much of Asia. The drivers are clear, such as greater upload and download speeds and spectral efficiencies, which lower ownership costs.

But what does this mean for engineers and designers of IoT networks and devices? Do you know the differences between 2G/3G and 4G LTE? Are you prepared to adopt 4G LTE?

Digi’s paper, Any-G To 4G, summarizes the process by presenting the five core considerations for migrating from 2G/3G to 4G LTE. You’ll learn about key factors that will impact your long-term adoption strategy, such as SIM cards, antennas, bandwidth selection, and assessing both the strength and quality of signals.

In Any-G To 4G, you’ll discover that by addressing these variables from the start, you can successfully move to 4G LTE networks and capitalize on their speed and capacity.

Read the white paper >>

The Next Generation of M2M Applications

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M2M networking is advancing. Sensors, gateways, batteries, and cellular technologies are all improving, and clouds are widely available. Coupled with refined data storage and analytics, a new generation of M2M applications is boosting enterprises’ productivity and bottom lines.

The Digi white paper, Cutting Through the Noise, presents an overview of the manifold new opportunities for leveraging machine data across the organization.

You’ll learn how M2M communications offer operational visibility into remote equipment and assets, delivering data that previously required on-site observation. You’ll see how to control costs by tracking power consumption at facilities and sites, and better quantify items rolling off the assembly line for optimal scheduling and resource planning.

You’ll also discover the advantages of using M2M networks to directly link demand and supply chains. Vending machines, for instance, can communicate which items are selling and when to restock them. This capability alone provides greater marketing intelligence, higher productivity and efficiencies, as well as more satisfied customers.

Cutting Through the Noise introduces forward-looking organizations to how today’s M2M solutions can create actionable intelligence, unprecedented proficiency, and competitive advantages.

Read the white paper >>

Critical Connection For Humanitarian Efforts with IoT Technology Demonstrated at HumTech 2016

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“Disrupting Humanitarian Response” was the common theme at the HumTech2016 conference in Cambridge, MA this week. The event brings together some of the brightest and most passionate people who focus on “technical ideas that advance global humanitarian action”.

Learned So Far

The purpose of the conference is to discuss, share and promote current research, and recent accomplishments across all aspects of technology, from science to systems that have a global humanitarian impact. Scalpel At The Cross, a Christian medical mission to the Peruvian Amazon, demonstrated the CrossCare project that utilizes Digi technology to bring critical orthopaedic services to the tribal population of Pucallpan Peruvians.

CrossCare is a custom-built application to withstand harsh jungle conditions. A state-of-the-art electronic medical record (EMR) system, CrossCare features an iOS-based application that runs on any Apple device (iPad, iPad mini, iPhone), leverages wireless peer-to-peer networking and Google Cloud data storage to create, manage, share and track patient data and treatment outcomes.

Outfitted with a collection of iPads, doctors and medical staff at the Pucallpa medical campus record important data through the registration, examination, and treatment planning stages. Through peer-to-peer networking over a Digi wireless router, information entered into one iPad is shared in near real-time on all of the staff’s iPads allowing each member of the medical staff to have complete information at their fingertips. Information is consolidated into a medical database and replicated on every tablet without servers or broadband connectivity. For patients requiring surgery, the CrossCare application is used to record surgery documentation, post-operative rounds and follow up exams.

The event’s keynote speaker, Gisli Olafsson with NetHope, said, “True innovation comes when you understand the fundamental problem that the user needs to resolve.” This is the role Digi plays the CrossCare project. Digi’s TransPort router solves the very real problem of collecting patient data during mission clinics, through surgery, and continuing through follow-up appointments.

The 3-day event was well-attended by a group of enthusiasts in the humanitarian space.

Sustainable Business ModelGisli also encouraged all to come up with a more sustainable business models to support work that allows entrepreneurs to create new innovations, and continue to innovate without the administrative overhead of writing grants each year, and generating extensive reports back to the donors.

The industry as a whole seems primed and ready for a shake-up, and is welcoming start-up technology teams that can bring new ideas and new technology to an older, established institution.

The idea that funding of humanitarian efforts will continue to come from governments or funnel through other existing world relief organizations is wavering. This leaves a huge opening for self-funding solutions and innovation projects like CrossCare that Digi has helped to develop. It’s our hope to make CrossCare available to other mission hospitals with the potential of growing it to be not just a Peruvian Amazon project but a global solution.

Greater Detroit Area Transit Agency Turns to Digi to Monitor Bus Fleet

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Suburban Mobility Authority for Rapid Transit Authority (SMART), a transit agency in the Greater Detroit Area, was faced with the realization that their automatic vehicle location (AVL) system was old, slow and inefficient.

SmartSMART operates over 200 buses for over 23 hours every day. Monitoring these vehicles is essential to daily operations. But with 20-year-old infrastructure, the AVL was just not cutting it. SMART wanted more reporting and real-time information that they could share with their riders.

SMART decided to switch to cellular communication with voice over IP (VoIP). To implement this they decided to work with Clever Devices, a leading provider of communications and technology solutions. The centerpiece of Clever Devices’ solution was the Digi TransPort WR44 R cellular router.

The Digi TransPort WR44 R is purpose-made for transit agencies and authorities that need reliable communications for such things as security video, fare collection, dispatch, passenger Wi-Fi, and others.

SMART’s new cellular AVL has had a profound impact. Data and metrics that were never before available are already being used to anticipate vehicle breakdowns, expedite repairs, and minimize downtime. Additionally, Passengers are now able to text a number posted at their bus stop to receive real-time data from SMART about bus ETAs. This service is already receiving more than 10,000 queries per month.

Most importantly, the agency is getting a great ROI. SMART is saving at least $70,000 per year in hard costs with the Digi-based solution. In soft costs it is estimated that SMART may be saving anywhere from an additional $150,000 to $200,000.

Read more about how SMART saves more than $70,000 per year with Internet of Things technology here >>

What Are the Differences Between DigiMesh® and ZigBee® Mesh?

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Mesh networking is a powerful way to route data over an RF network. Range is extended by allowing data to hop node to node and reliability and resiliency is increased by “self-healing,” or the ability to create alternate paths when one node fails or a connection is lost.

One popular mesh networking protocol is ZigBee®, which is specifically designed for low-data rate, low-power applications. Digi offers several products based on the ZigBee protocol. Additionally, Digi has developed a similar mesh protocol named DigiMesh®. Both ZigBee and DigiMesh offer unique advantages important to different applications. The following chart highlights these differences:

ZigBee® Mesh DigiMesh®
Node types and their benefits Multiple: Coordinators, Routers, End Devices. End devices can sometimes be less expensive because of reduced functionality. Single: One homogeneous node type, with more flexibility to expand the network. DigiMesh simplifies network setup and reliability in
environments where routers may come and go due to interference or damage.
Battery Deployed Networks Coordinators and routers must be mains powered All nodes are capable of battery operation and can sleep. No single point of failure associated with relying on a gateway or coordinator to
maintain time synchronization.
Over-the-air firmware updates Yes Yes
Range Most ZigBee devices have range of less than 2 miles (3.2 km) for each hop. Available on XBee SX with range of up to 40+ miles for each hop.
Frame payload and throughput Up to 80 bytes. Up to 256 bytes, depending on product. Improves throughput for applications that send larger blocks of data.
Supported frequencies and RF data rates Predominantly 2.4 GHz (250 kbps) 900 MHz (Up to 250 Kbps), 868MHz, 2.4 GHz (Up to 250 Kbps)
Security 128-bit AES encryption. Can lock down the network and prevent other nodes from joining. Both 128 and 256-bit AES encryption. Can lock down the network and prevent other nodes from joining.
Interoperability Potential for interoperability between vendors. Digi proprietary
Interference tolerance Direct-Sequence Spread Spectrum (DSSS). 900 MHz: Frequency-Hopping Spread Spectrum (FHSS). 2.4GHz: Direct-Sequence Spread Spectrum (DSSS).
Addressing Two layers. MAC address (64 bit) and Network address (16 bit). MAC address (64 bit) only.
Maintenance More sniffers and diagnostic tools available on market. Simpler addressing can help in diagnosing problems and setting up a network.

For more information on DigiMesh and Digi XBee click here.

Fog Computing in the Internet of Things (IoT)

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The Open Fog Consortium defines Fog Computing this way: “A system-level horizontal architecture that distributes resources and services of computing, storage, control and networking anywhere along the continuum from Cloud to Things.” In his recent Fog Computing report, Aapo Markkanen at Machina Research puts Digi in this category. He says, “Digi is well placed to a make a play in fog computing, given its strong communications portfolio and additional capabilities [such as] Device Cloud and device management.” We couldn’t agree more!

Intelligence on the edge of the network allows our customers to store, shape and translate machine and sensor data to maximize connections from the device to the cloud. Digi Device Cloud enables our customers to bring enterprise routing features to the edge of their networks enhancing security, storage, and redundancy.

The concept of Fog Computing accurately describes the way our customers are managing mission critical applications across multiple wireless protocols making it easier to configure, deploy and manage devices on the edge of their networks.

Click here to learn more about Digi Device Cloud >>

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