This perfectly embodies the kind of hacker spirit that I love.

Reminds me of the LoLRa project from cnlohr that transmits LoRa without a radio transceiver.

I despise these wheels. About 15 years ago, my wife and I went to Target and first went to lunch at the far end of the parking lot. After lunch we headed into the store, grabbed a cart, now loaded with our newborn in his car seat, and our two year old sitting in the cart. A quick shopping trip later, we headed back to the car. When crossing the Target parking lot, the wheels locked up, in the middle of the road. Cart wouldn’t budge. Traffic all over the place, and now I have to pull both my children out, along with the shopping, and carry them all to my car. Pissed is an understatement. After my wife and kids were secured back in the car, I retuned to Target, complaining to the manager. A shrug was the best I received. Why did they need to put the wire in the middle of the road???

I hope someone attaches Bluetooth speakers to their shoes and locks every cart in target, so they have to remove the system.

Author's bio line says they are a "flat mooner". Which gave me quite a chuckle.

That talk was incredible. Thanks for posting this and now I want to find them in the wild.