[quote name='BILL POSTERS' timestamp='1406190416' post='2509098']
If your really paranoid about it, how about putting / hiding a cheap small pay as you go phone in the case with it ? £5 or so with a sim card from Morrisons, and sign up to one of those sites track your kids phone, Cheap tracking for anything up to a van load of gear, but dont forget to put the phone on silent, they send texts to tell you the phones being tracked.
[/quote]
Cool idea!
Mini Global GPS Tracker with GPRS connection http://www.amazon.co.uk/dp/B003XDQUQE/ref=cm_sw_r_udp_awd_H4m0tb0VSSR2K9NY?ie=UTF8