Thank you. This is the kind of speed-of-correction (~20 min or less) that is needed for social media discourse to work effectively. Indeed, no evidence has been found, this was just a silly meme from Reddit which predated the Hans drama by several years. When the Hans drama happened, of course Redditors started making silly flippant references to this joke. But some people didn’t understand that those were references, instead mistook them for actual “accusations”, bought into it, and started actually seriously perpetuating the accusation/rumor. It was repeated often enough in juuust serious enough tone that tabloid journalism eventually picked it up and ran stories with it.

But overall perhaps the false rumors might have been a good thing? Depending on how you balance/weigh personal harm to Hans Niemann vs. How FIDE’s response benefited championship-level players. The rumor/tabloids in combination with Magnus Carlsen’s very loud whining(?) got FIDE to greatly upgrade their security posture and now they walk through metal detectors and their shoes are put through metal detector/scanned manually.

So it’s very hard to hide controls for something like this at the moment. Worth noting that radio-controlled / WiFi buttplugs actually made for sex often fail to pick up their command signals because the flesh attenuates the signal too much. The most reliable ones have an antenna exiting the body (kind of like the Lovense Lush or Vulse series). I don't know if metal detectors will pick up an ESP32 and an antenna and a lithium battery large enough to power that for up to 6 hours or so…but I think they might?

Normally I’d expect the butt part to just be the RX, with TX done with the toes or something rather than by butt clenching some kind of morse code, which would require some moderately impressive signal processing and a lot of player-practice. Any non-butt-clench TX would be very very to get past the current FIDE anti-cheating-device screening.

But maybe someone could get away with something built on the same platform as the O.M.G. cable - but I still expect the power demands of WiFi to require a battery big enough to be detected. Or maybe someone could get away with a tiny-enough battery by dropping power-hungry wifi in exchange for LoRA (1x) / long range BLE (10-20x) / SigFox (1-2x) / IEEE 802.15.4 (Zigbee & Thread) (5x-10x) / NB-IoT (50x-100x)? Multipliers are for rough energy-per bit estimate. Anything else would have too short of a range; would need to be at least reliable at 50 feet. So probably LoRA because it has both lowest energy-per-bit as well as excellent long range.

With an optimized microcontroller strategy and wireless strategy, most of the battery energy would be used for the motor. A small cell phone vibration motor (weakest you could get away with and still reliably feel) uses 60mA at 3V. A lithium coin cell battery can only provide around 1% of that current, so you’d need a bigger battery - at least 100mAh lithium weighing approximately 3g (75% of this is metal). A cell phone vibration motor weighs about 1g (all metal). The world’s smallest Lora module with included microcontroller (FMLR-6x-x-MA62x) weighs about 16g (not sure what % of that would be metallic, lets say 10% as a low-boundary worst case).

So at minimum you’d be looking at 5-6 grams of metal for this cheating device (which has no input device at all!!). This is approximately the weight of one US quarter. It is right at the limit of what walk-through metal detectors are rated to detect on their highest sensitivity. NIJ level 3-certified metal detectors like the Garrett PD 6500i are designed to be able to detect a steel handcuff key which weighs about 4 grams. The manual for this scanner includes a technical drawing for a reference design of a test “handcuff key” so that customers can validate this performance themselves.

Is FIDE using an NIJ level 3 metal detector? I don’t know. But if they are, it would be impossible to get a radio-controlled buttplug through without detection.