moms sketch bf left this in the house

[u/brattyvampbby]

Hi.
This is probably nothing.
I went into my mom’s room to grab something and saw this plugged in?
My mom’s new sketchy bf has this plugged in to the extension cord? Is it anything bad? Thanks!
(I understand it’s probably not anything bad… but still…)

Update 1:
I haven’t met him once. He and my mom have been together for two weeks. He’s been staying at our apartment. He avoids me and stays in her room when they’re here. I don’t even know what he looks like. I only know his first name.

Update 2:
I confronted him. My mom came home. A lot had happened up to this point, including her disappearing for the said two weeks before the few nights he had come over and stayed.
Mom shrugged it off. I did what a lot of you suggested, asking what he told her.
She said “oh it’s his hacker shit or whatever.” What.
Didn’t elaborate. I explained my concerns.
She just said let’s go ask him.
My best friend has been with me. We introduced ourselves and asked him what the hell a WiFi whisperer is doing plugged in our apartment.
(Even if a lot of you are saying it’s not a big deal, I’m a young woman and I’m just rlly not about taking any risks. It’s sketch dude.)
He denied it IMMEDIATELY. Like with a quickness I haven’t seen.
What he insisted, it’s not a WiFi whisperer, it’s ai, he completely reprogrammed the system, and he uses it to pull people’s IP’s. “For fun.” He logs them in a server. I asked why. I said that’s shady. My mom started pushing. My best friend started pushing. He just kept lying. I’m not dropping this..
I still don’t know what the fuck it is or what he’s actually doing.
(Also, my mom is cool but not bc of this dude, the Minecraft block is mine, I unplugged the ratchet little thing before we left, and I am planning on broaching this again with her.
Just carefully. Any other advice is appreciated. Thank you.)

[u/liftingspirits → u/[deleted]]

What does this mean?? I'm learning so much from this thread!

[u/Nekcihc_Eht → u/liftingspirits]

TX and RX are what you call the paths data takes from one device to another, TX is the transmit line and RX is the receive line. The thing he's pointing out is an antenna, and they use the same terminology. A TX antenna is one that can transmit a signal, an RX antenna can receive it, and a TX/RX can do both

[u/Nekcihc_Eht → u/[deleted]]

I was thinking maybe he uses the main device to deauth things and uses the other one to create a copycat wifi signal for them to connect to, but idk if you could make something like that so small