A transaction card receives a first input containing a first touch sequence from a first user and including first touch gestures, determines that the first touch sequence corresponds to a first reference touch sequence associated with the first user, and initiates a first operating mode, associated with the first touch sequence, that is associated with the first user and causes the transaction card to perform a first function. The transaction card receives a second input containing a second touch sequence that is different from the first touch sequence, from a second user and including second touch gestures, and initiates, based on determining that the second touch sequence corresponds to a second reference touch sequence, a second operating mode, associated with the second touch sequence, that is associated with the second user and causes the transaction card to perform a second function that is different from the first function.