I like Steve's option for home theft prevention. Crooks like easy theft, they don't like things that take effort, noise, i.e. grinder, and time to steal. Time will get crooks caught. A "Ring" door bell camera mounted in your garage will alert you on your phone if somebody enters your garage and triggers the viewing plane of the camera. This allows you to call the cops or deal with it yourself.
I like PowUnity's BikeTrax GPS tracker. The nice thing about the Powunity BikeTrax GPS tracker is it comes in various wiring configurations for all the major eBike drive systems. It's made to be mounted internally inside the bike and is powered by the bike's battery. it's a compact setup and pretty much plug and play. The system works in Australia and Europe, but unfortunately not in North America.
GPS tracker Bosch Generation 4 ▷ GPS set incl. cable ✚ free smartphone app ➥ GPS theft protection for e-bikes with Bosch motor ➥ BikeTrax GPS
powunity.com
In America there are no compact, plug and play GPS offerings available. I travel with my bike a lot. I worry my bike will get stolen from my bike rack during a pre or post ride vehicle stop. I try to park where I can see my bike, however there are times where parking isn't the best and I don't have a clear view of my bike. As stated by you fine folk, 'If somebody wants it, they're going to get it.' To help me recover my bike after it has been stolen, I mounted three Apple "Air ID tags" on my bike. I figure a $7,000 eMTB (Levo Carbon Comp) is worth a few Apple Air Tags. The nice thing about Apple Air Tags is that they are small and can be mounted all over a bike. They don't require charging or a subscription plan. Most importantly, they will give you about a 12 -24 hour window to track and recover your bike via your iPhone.
View attachment 140538
I mounted the first Apple Air Tag inside the rear wheel using a Muc Off air tag holder.
View attachment 140534
I mounted the second inside the down tube/battery cover using double sided Gorilla Tape.
I mounted the third under my saddle as a "Throw Away" air tag. I bought a saddle rail air tag holder off of Amazon. I figure the crooks will see the saddle air tag and quickly remove it, thus making the shit bags think the bike is clean. The air tags won't prevent a theft, but they'll give you about 12 hours to track and recover my bike with the help of police.
View attachment 140537
The Apple Air Tag has one weakness. When the Air Tag first came out, it was a beautiful way to track keys, a lost pet, lost luggage, etc. Then jackasses began using them to track people by planting them on the person's vehicle. To combat the stalking, Apple added an alert feature to the air tag. If an air tag is placed "Long Term" in the vicinity of a person's iPhone for a period of over 12 hours and the air tag doesn't belong to that person, i.e. the air tag hasn't been paired to that iPhone, it will send an alert to the phone letting the iPhone user know they are in the vicinity of an Apple Air Tag. A short time after the alert, the Apple Air Tag will start beeping. This allows the person being tracked to locate the Apple Air Tag.
Naturally, it would be exceptionally nice to not alert the crooks that the bike they've stolen has an Apple Air Tag tracker mounted on the bike which they will find and remove. Fortunately, there's always a hack. You can easily remove/disabled the Apple Air Tag beep emitter from the air tag. This will buy you an additional few hours while the crook tries to locate the air tag hidden on your bike.
The air tags hidden in the down tube and rear wheel have the sound emitter disabled. The air tag mounted on the saddle rail does not. My thought is this, once the crook gets the alert on his iPhone and the the air tag starts beeping he/she will remove the saddle rail Apple air tag. The crook will thing everything is good to go. The crook will continue getting an alert on his iPhone because of the other two hidden air tags. Hopefully, the shit bag will confuse the alert he/she is getting as being caused by the saddle rail air tag and not the other two air tags which are not emitting a beeping noise. I realize this is not fool proof, but hopefully it'll buy me a few more hours of recovery time.
Be safe,
Rod