Security tools like Flipper Zero are essentially programmable radios, known as Software Defined Radios (SDRs), a technology which has existed for years, and in some cases can be built using open-source or simple over-the-shelf-components.

SDR is really cool:

http://websdr.ewi.utwente.nl:8901/

[–] FinishingDutch@lemmy.world 7 points 8 months ago (1 children)

That’s my local university; I listen to it all the time. It’s awesome to just listen to things from god knows where, knowing that it bounced around basically half the globe to reach me.

The tech itself is also really cool. You can have hundreds of people all listening and tuning to their own frequencies, all at the same time.

[–] AnneBonny@lemmy.dbzer0.com 2 points 8 months ago

It's really cool.

[–] al177@lemmy.sdf.org 2 points 8 months ago

SDR? I thought it just had a CC1101 for sub-GHz digital and an NFC/RFID module? CC1101 is very flexible but it doesn't do direct IQ sampling.