Don't know if that have been suggested already. Right now in mod you can check another players backpack without any notice. Agree you or not, but in real life it's impossible to get into another person backpack without him noticed it. EXAMPLE: Lets say you asked another person to make you a blood transfusion. While doing so he started to check your backpack. There is no options you can know that. SOLUTION: If another person put hands into your backpack you can get a message, for example: "Player Mad Leshy checking your backpack right now!". So you can decide if this was allowed action than it's okay. If not - you can shoot the player, OR... Move a little bit to cancel his action. In this case your backpack menu will disappear on another player screen. Or, you can check other person backpack only if you stand right from behind. Thanks.