Thread: N900 Anti-theft Project
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tzsm98 is offline tzsm98
2010-05-30 , 18:55
Posts: 500 | Thanked: 437 times | Joined on Nov 2009 @ Oklahoma
#10
Here is a possible flow for a device retrieval application

Front End

Have GUI request form that will:
  • Store the IMSI
  • Store emergency contact number
  • Allow owner to record 'This phone is lost or stolen, please contact (emergency contact number)'.
  • Prepend and append three loud beeps to message.
  • Store message in ringtone folder.

Back End
  • Have the N900 check the IMSI upon boot.
  • Compare the IMSI upon boot to stored IMSI
  • If same end
  • If current IMSI<> than stored IMSI then collect new IMSI; new Caller Line number, active cell, GPS coordinates.
  • Set profile to General
  • Set ringtone to 'this phone is lost or stolen, please contact (stored emergency contact number)
  • Write collected information to SMS.
  • Send SMS to emergency contact number.
  • Take front photo
  • Send front photo to emergency contact number using fMMS.
  • Using cpufreq command set maximum frequency to 250 MHz
  • Set phone to reboot every 180 seconds.

This will send, at three minute intervals, the new number, IMSI, image, active cell and GPS location of the phone. This will also semi-cripple the device through repeated rebooting and low processer speed.
Last edited by tzsm98; 2010-05-30 at 18:59. Reason: misplaced comma!