FIELD: portable electronic devices.
SUBSTANCE: portable electronic device includes memory to store a secret code in the form of pre-defined character sequence; rotating device with touch surface providing for user tactile impact and installed in such a manner as to provide for rotation around its axis; feedback tools separated from the rotating device to provide for feedback to user when turning the rotating device; conversion tool to convert each turn in sequence of turns of the rotating device to a character of corresponding ordered test character sequence, and verification tool to verify the test character sequence by comparing it with pre-defined character sequence.
EFFECT: user convenience during input of test character sequence along with provision of security and restriction of access to the device or to its individual functions.
33 cl, 7 dwg
