Utilizing a card to open a door is a handy and safe approach to enter a constructing or room. Many several types of playing cards can be utilized to open doorways, together with key playing cards, proximity playing cards, and sensible playing cards.
Key playing cards are the most typical sort of card used to open doorways. They’re sometimes product of plastic and have a magnetic stripe or RFID chip embedded in them. When the cardboard is swiped by a card reader, the reader reads the data on the cardboard and grants entry to the door.
