logoalt Hacker News

Etherytelast Tuesday at 11:26 PM6 repliesview on HN

This is not really accurate though. Both a Raspberry Pi and a Flipper Zero can easily and readily be turned into a signal jammer or spammer with off the shelf parts and nearly no technical skill. Modern smartphones are generally both more locked down and also don't come with an external antenna option.


Replies

throwup238last Tuesday at 11:36 PM

> Modern smartphones are generally both more locked down and also don't come with an external antenna option.

There are USB On-the-Go compatible SDRs [1] that you can hook up to an Android phone that cost like $50 (don't know if there are any that would work with iOS though).

[1] https://www.nooelec.com/store/sdr/sdr-receivers/nesdr-nano-t... (this one doesn't support wifi frequencies, but this was off the top of my head)

show 2 replies
whatshisfacelast Tuesday at 11:35 PM

Readily turned into a signal jammer? Do you know this or are you just guessing? Raspis are SBCs not tricorders from star trek.

In terms of actual knowledge, wifi chips, like the one on your laptop or a raspi do not have software settings for that. They are predominately defined by hardware and by opaque binary blobs the kernel developers have their hands full reverse engineering compatible interfaces for. In addition, electrical interference far beyond what a tiny communications radio is capable of can come from dangerous items such as microwaves, electric motors and nine volt batteries plus spools of wire.

show 1 reply
dfxm12yesterday at 1:27 AM

Like the article asks, why ban these two specific brand name devices? If you're worried about signal jammers, why not communicate that you're banning, oh, I don't know, "signal jammers"?

snibsnibyesterday at 12:04 AM

I have a $5 ESP32 board that does the same, my phone is just the UI!

el_memoriosolast Tuesday at 11:50 PM

Any mobile computer can be easily and readily turned into a signal jammer/spammer with an off-the-shelf SDR. There is nothing particularly special about the Raspberry Pi. I didn't see laptops on the list.

show 1 reply
anthkyesterday at 12:31 AM

So can a rooted Android phone.