A device receives, from a short-range wireless communication device associated with a safe deposit box, first data identifying a first transaction card, and identifies a bank employee associated with the first data. The device determines whether the bank employee is authorized to access the safe deposit box, and starts a timer when the bank employee is authorized to access the safe deposit box. The device receives, from the short-range wireless communication device, second data identifying a second transaction card, and determines whether the second data is received prior to an expiration of the timer. The device identifies a customer associated with the second data when the second data is received prior to the expiration of the timer, and determines whether the customer is authorized to access the safe deposit box. The device causes the safe deposit box to be unlocked when the customer is authorized.