US Patent 9507969 Method of protecting power receiver and related wireless charging device

A method for a power receiver for protecting a power receiver from being taken without permission while charged wirelessly includes receiving wireless power from a power transmitter and performing wireless charging in a security mode by the power receiver; detecting whether the wireless charging is interrupted without receiving a security code for authorization; and starting a protection function if the power receiver detects that the wireless charging is interrupted without receiving the security code for authorization.