Absolutely it is. There's a cool open source project called Pwnagotchi that automates the process using machine learning, is that the Pi project you were thinking of?
Discussion
Looks similar but I think it was Wi-Fi Pineapple.
The project I saw was a Pi with a GPS board and OLED display in a 3D printed case with battery.
Seemed like a cool fun project.
That sounds like Pwnagotchi to me, but interested to see what it is if it's another project.
I got a Pineapple but it's overpriced for what it is - there's scripts on GitHub that automate building the Pineapple firmware on much cheaper consumer routers that use the same SoC. It's just a bunch of open source tools with a friendly UX on top of OpenWrt after all.
That said, I can personally attest to the Pineapple's ability to fit in a small bag and be controlled from a smartphone while it's powered by a regular power pack used to change phones etc and it does have impressive range.
I went searching and maybe it was a Pumpkin Pi build. I can’t seem to find the exact one and Duck Duck Go keeps showing the same stuff over and over again.