Both the Commodore model 1670 modem and recent Android phones support Hayes AT commands. https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-

Both the Commodore model 1670 modem and recent Android phones support Hayes AT commands. https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-tian.pdf https://www.usenix.org/system/files/conference/usenixsecurit... https://en.m.wikipedia.org/wiki/Hayes_AT_command_set https://en.m.wikipedia.org/wiki/Hayes_AT_command_set http://www.zimmers.net/cbmpics/oserial.html http://www.zimmers.net/cbmpics/oserial.html