Password-protected contact card for prepaid water, electricity & gas meters. SLE4442 pin-compatible, low-cost, mass-issuance ready.

Secure-logic contact card for building access, offices and campus systems. Closed-loop, no certification needed. SLE4428-compatible, volume supply.

Password-protected stored-value card for canteens, catering and parking. Small-amount closed-loop payment, no scheme certification. SLE4442 / FM4442.