What Does 'SIM Card' Actually Mean?

SIM cards have become a universal aspect of modern smartphone usage, but the technology and meaning behind the name dates more than three decades.
CNN

Six key questions about the dismantled network capable of crippling New York’s cell system

The US Secret Service this week revealed that a probe into a surge of swatting calls against high-ranking officials led investigators to a vast and stunning network of more than 100,000 SIM cards and ...