Abstract: A pocket liner for a garment pocket or laptop case/tray having material that blocks RF radiation by mobile devices located in the garment or case/tray by persons wearing the garment or using the case/tray from reaching the person's body. The pocket liner when located next to a side of a garment pocket, case/tray that faces the person protects the person from RF radiation but does not prevent associated mobile device from receiving communications. Said liner when used in as a laptop case/tray will also prevent RF radiation to the body. Said liner can also be crafted for a carrying case pocket for computing devices serving to prevent both RF radiation as well as help shield to prevent Cyber intrusion from occurring within the device. Application for the pocket liner can be sewn, ironed on, glued on, during or after manufacturing.