While the proprietary frequency hopping modulation and the number of networks and addresses can make it very difficult for an outsider to eavesdrop on communication, it would be possible for another Digi radio to "listen in" on communications provided it was configured to the proper channel and radio address. For additional security,Digi can program a unique Vendor IDentification number (VID) into the firmware of the radio for a fee. Unique VIDs are given to one vendor, and one vendor only. Only units with identical vendor identification numbers will communicate.
Every transmission from a Digi radio modem contains a 16-bit VID that is settable only at the factory. Digi radio modems can only interact with other modems that have a matching VID. If a Digi customer chooses to purchase a VID, they receive a special ordering part number and each radio modem is configured to work with their systems only prior to shipping from the factory. No other individual or company can purchase modems that might interact with the modems containing a special VID.
To order your own custom VID, the set-up fee is $1,000 and an additional $5/module. If you would like to set up your own custom VID, please contact your sales representative at email@example.com , or 1-866-756-9885.
Last updated: Aug 23, 2017