Here’s How Those Battery-Free Flashing Phone Stickers Worked

D'ou les ondes de nos premiers portable qui pouvait faire des dégats…

The late 90s and early 2000s were a breakout time for mobile phones, with cheap GSM handsets ushering in the era in which pretty much everybody had a phone. Back then, a popular way to customize one’s phone was to install a sticker that would flash when the phone rang. These required no batteries or any other connection to the phone, and [Big Clive] has dived in to explain how they worked.

via Hackaday : lire l’article source

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