If you are interested in Secure Touch Solutions at Cirque, You can get more information here: https://www.cirque.com/payment-terminals More...
Is external pull up resistors required on I2C signals of GT4?
Does the micro-controller on GT4 do I2C clock stretching?
How are security countermeasures implemented on GT4 (factory calibration, Cryptographic authenticaion of GT4 flash image, SHA256, bug detection,...
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