The SEID app for iOS or Android works with Bluetooth enabled Security Engineering card readers which currently is the following products:
SE 1041 readID for Siedle
SE 1042 readID for Siedle
SE 1150 Bluetooth Upgrade Module
The SEID app transmits a 48 bit ID to the card reader via Bluetooth. The ID is generated during the installation of the app based on the individual phones hardware ID.
Please download the SEID app from App Store or Google Play.