// the find
salmg/AudioSpoof
Magnetic stripe spoofer implementing audio waves.
A proof-of-concept C program that encodes magnetic stripe card data as audio waveforms, exploiting the fact that mag stripe readers are just audio decoders. Interesting as a hardware hacking demo from 2017, not a practical tool.
Single-file implementation makes the encoding logic easy to read and understand; demonstrates a non-obvious but real attack surface (mag stripe readers interpret FM-encoded audio); good starting point for understanding how mag stripe encoding actually works at the signal level.
Abandoned since 2017 with no updates, no build system, and a compile command that produces a.out — this is prototype-grade code; no parameterization, card data appears to be hardcoded; no documentation on the F2F encoding format or signal parameters beyond a blog post link; compiling a C file with g++ is a red flag.