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When you go out in a hurry and felt suddenly unsure if you have locked the door.
You will fall into a state of hesitation, not knowing whether to go back and check or not.
“Memory key” can avoid the situation effectively. Locking and opening the door will adjust the switch on the key when the key is turned. The letter on the key showed the state of the door- whether it’s locked or unlocked.
L (lock) → When the switch shows ”L” , means “Lock”.
U(unlock) →When the switch shows ”U” , means “Unlock”.
National Taipei University of business
Taipei City, Taiwan