Do a search for "Alarm" and use all dates and look at the results. Also, search for "Shock" and use all dates. Scrutinize your results and you will find all the answers.
There are motion alarms that lock onto your moped. These are very difficult to destroy or remove, but make a lot of noise when activated.
You can use your whole moped as a postive charge, waiting to ground (through a model-t coil) to anyone who touches your moped. That's a whopping shock, which would deter most thieves. This takes some knowhow, but all the info has been presented here in the forum.
And elevator cable for a coil-lock, for bad areas, and for somwhat secure areas, a basic U-lock, or a couple krypto-coil locks.
If you are serious, there are very real options to protect your moped. The search I mentioned will illuminate the path to safety.