What is a black card, and who qualifies for one?

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Here's How Researchers Stole $10,000 From MKBHD's Locked iPhone

An iPhone exploit that involves a linked Visa card can allow attackers to steal money from a locked device using NFC, but the ...

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IEEE

A Novel Prescribed-Time Second-Order Sliding Mode Controller Using Only Signs of the Variables: Design and Experimental Validation

Abstract: In practical control systems, limitations such as binary sensing, sensor saturation, and inherent nonlinearities often restrict the available feedback to only the sign of the measured ...