Technology which you were praising earlier can pick 6 license plates PER SECOND on vehicles travelling multiples of the speed you suggest bikes get up to. I don't think it's beyond the bounds of possibility that advancements in technology are such that something the size of a rear reflector on a bicycle as another poster suggested, could be identified by cctv and the errant cyclist fined appropriately. Even dashcam footage (not just cyclists can record other road users you know) could be used in identifying the miscreants.
And if, as you claim, you "want everyone to follow the rules" you should have absolutely no problem with this.
Ive already addressed this.
The technology exists to recognise faces, not small postage stamp-sized QR codes. That is what you are after, China-style surveillance. Good luck with your lobbying.