Infineon’s single-chip solution for NFC lock applications

Keep It Simple Storage (KISS), a US-based provider of state-of-the-art solutions designed to make running self-storage facilities simple, has transitioned from manual locks to fully automated and remote-controlled systems for secure locking. With the NFC-powered, battery-free smart lock solution from Infineon Technologies, the rental storage provider is enabling secure locking for storage locations with a smart lock.

The KISS smart lock system enables owners and operators to switch from manual locks to smart locks without the need for disruptive add-on devices such as batteries, Bluetooth, or cables. The system enables instant troubleshooting and remote problem-solving – a feature not previously available in this industry. These features eliminate common self-storage inconveniences such as auctions, lost keys, and replacing locks. It also eliminates the need for operators to provide 24/7 maintenance teams for individual lock incidents. The smart lock is based on Infineon’s NAC1080 microcontroller (MCU), a single-chip solution with integrated H-Bridge for passive NFC lock applications.

“We are thrilled to introduce our new smart lock products to the world, a perfect blend of cutting-edge NFC technology and energy harvesting mechanisms. These lock products not only ensure unparalleled security but also reflect our commitment to sustainability. It’s not just about unlocking doors; it’s about unlocking a future where technology eliminates inefficiencies while creating eco-friendly living environments,” said Robert Kapp, Founder of KISS. “We are pleased to see that our innovative technology can help customers develop disruptive solution, thereby reducing e-waste and lowering overall carbon footprints” said Doris Keitel-Schulz, Vice President Contactless Power and Sensing at Infineon’s Power & Sensor Systems Division.

Infineon’s NAC1080 integrates both an H-Bridge and an energy harvesting module to enable a smart actuator in a single-chip solution, with less components. Through the NFC interface, the NAC1080 MCU enables direct control of a device via a smartphone, which allows multiple storage units to be managed from a KISS lock system. In addition, advanced local and cloud functions can be extended via the mobile app. The NAC1080 also reduces bill-of-materials and supports miniaturized product design.

The MCU supports various operation modes and can be powered either in passive mode by the NFC field with the energy harvested from the mobile phone, or through a battery supply in active mode. The NAC1080 also features an integrated AES128 accelerator and true random number generator, enabling data encryption and decryption in an ultra-low power environment. In addition to passive NFC lock applications, the NAC1080 can also be used in applications such as back-up power for active lock systems and NFC interface ICs for electronic devices.