How a 17-year-old entrepreneur in Poland accidentally made the Apple Watch easier for deaf people

Five hand sign appLike a lot of Polish 17-year-olds, Mateusz Mach is into hip-hop.

“It is something I identify with,” Mach says.

Unlike a lot of Polish 17-year-olds, he decided to turn his appreciation into an app business. After six months of work, he released Five, a messaging app for Android, iPhone, and Apple Watch that lets you and your friends throw one another custom hand signs, like the kind rappers throw.

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