After a claim is filed, and many times merely as a matter of course after an insurance company becomes aware of an incident leading to a potential claim/case, should they feel that the damages warrant it or that the liability or injuries are questionable, the insurance carrier or other party may actually hire an investigator regarding your claim/case to use any information learned against you. This means that you may be followed without your knowledge, filmed and/or recorded, your claims history will be investigated, back-ground checks may be performed, credit checks may be done, etc. EVEN WITHOUT YOUR KNOWLEDGE THAT IT IS HAPPENING! For these reasons, it is imperative that if you have various limitations prescribed by a treating physician that you follow them. Similarly, if you engage in activity that would otherwise be construed as contrary to the injuries claimed, such may be used against you and damage the value and even the viability of your claim/case.