The Flipper Zero is an affordable handheld RF device for pentesters and hackers. It is not based on SDR technology, however it uses a CC1101 chip, a digitally controlled RX/TX radio that is capable of demodulating and modulating many common digital modulations such as OOK/ASK/FSK/GFSK/MSK at frequencies below 1 GHz. 

What sets it apart from most of the other CC1101 devices is the high level of software support built into it, the enthusiastic community and of course the branding. 

Back in August 2020 we initially posted about the Flipper Zero starting it's crowdfunding campaign on Kickstarter. Since then, despite major business problems like PayPal freezing 1.3M of it's cash, and US customs temporarily seizing its shipments, then passing a $70,000 bill on to them for storage fees, Flipper has gained huge popularity through social media video sites like TikTok, where people show off it's capabilities, often in ways that could be considered mischievous.

Recently over on YouTube, Linus from the most popular technology YouTube channel Linus Tech Tips reviewed the Flipper Zero. In the video Linus discusses the legally and morality of the Flipper Zero, and discusses some use cases around RFID and NFC.