Bertram Leesti

Title: Bertram Leesti: Innovator in Device Security and NFC Technology

Introduction

Bertram Leesti is a notable inventor based in Toronto, Canada, recognized for his contributions to device security and near field communication (NFC) technology. With a total of nine patents to his name, Leesti has made significant advancements in the field of electronics.

Latest Patents

One of Leesti's latest patents is focused on device security utilizing physically unclonable functions (PUF). This innovation involves an electronic device that includes a printed circuit board with a PUF source. The PUF source consists of multiple traces, each designed with a first and second portion that has an increased surface area. This design allows the PUF source to respond to inputs from processing circuitry, providing PUF data based on the impedance characteristics of the traces. The processing circuitry is then able to utilize this data to perform various operations within the device.

Another significant patent by Leesti pertains to controlling reader transmissions based on the resonant frequency of NFC devices. This system includes an NFC reader that communicates with a remote NFC device through load modulation. The reader transmits a wireless carrier signal, which the remote device modulates by altering its internal impedance to send data back. The NFC reader is equipped with an antenna that receives this modulated signal, and the associated circuitry analyzes it to identify the resonant frequency of the remote device. This information is crucial for optimizing the transmission characteristics of the NFC reader.

Career Highlights

Throughout his career, Bertram Leesti has worked with prominent companies such as Block, Inc. and Square, Inc. His experience in these organizations has contributed to his expertise in developing innovative technologies that enhance device security and communication.

Collaborations

Leesti has collaborated with talented individuals in the field, including Afshin Rezayee and Kamran Sharifi. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Bertram Leesti's work in device security and NFC technology showcases his innovative spirit and dedication to advancing electronic devices. His patents reflect a commitment to enhancing security and communication in the digital age.