| 摘要 |
The present invention relates to a key (1), to the head of which is attached a device (7). Said device comprises an accelerometer (13), which detects the movements made by the key as it is used to lock and unlock a door. After detecting said movements, the device saves information about whether the movements were made in connection with locking or unlocking. This information is presented, for example on a display. The invention thus makes it possible for the key bearer to find out whether the key when last used was used to lock or unlock the lock. |
