Abstract: A system and apparatus are disclosed for indicating interactions between a key and a lock, and presenting this interaction information to the user. These apparatus and system are not specific to certain types of key or lock. In embodiments, the apparatus includes a number of detector switches to identify that the key has entered the lock. In other embodiments, the usage time is measured and presented to the user. In certain embodiments, the action performed with the key, ‘lock’ or ‘unlock’, is identified by a number of tilt switches or accelerometers to detect the direction of key rotation in the lock. An electric scheme and mechanical design of some apparatus embodiments are disclosed. A method for reading information by the user on the time of usage for a particular apparatus embodiment is described. A method for processing the interaction information in the form of records is also provided.

Abstract: A system and apparatus are disclosed for indicating interactions between a key and a lock, and presenting this interaction information to the user. These apparatus and system are not specific to certain types of key or lock. In embodiments, the apparatus includes a number of detector switches to identify that the key has entered the lock. In other embodiments, the usage time is measured and presented to the user. In certain embodiments, the action performed with the key, ‘lock’ or ‘unlock’, is identified by a number of tilt switches or accelerometers to detect the direction of key rotation in the lock. An electric scheme and mechanical design of some apparatus embodiments are disclosed. A method for reading information by the user on the time of usage for a particular apparatus embodiment is described. A method for processing the interaction information in the form of records is also provided.