Lets face it, everyone is going to be an expert at placing non-detectable tracking devices and everyone is going to be an expert at removing said non-detectable tracking devices. I would suggest the following rules.
- No secretly slapping a tracking device on someone. You put a tracking device on someone, you tell them where you placed it OOC or emote something. If you don't tell the person OOC or emote something indicating that you have placed a tracking device on them, then you did not place the device on them successfully. If you emote something, then you should send a tell and maybe even an email with details of the what and how of the device being placed.
If you are searching for a tracking device hidden on someone, RP it out. It will actually be up to the player with the device placed on them to determine if it was found. That's why it's important for the person placing the device to email the what and the how it was placed. This also means that the player being tracked should play along with the information provided to them.
Before you use /findfriend. Send a tell asking if the device is still active. If the person replies that the device is still active, informing the person OOC you are now tracking their movements with /findfriend.
If you have a tracking device on you and someone finds it, note the WP and planet you were at when it was found. If you get a tell from someone saying that they are trying to track you, give them the WP of where it was last active.
If the tracking device is found while you are actively being tracked, inform the person tracking you that the device went dead at the WP where it was found.