no signal sleeve rfid schutzhuelleEven though smartphones undoubtedly enrich our everyday lives by giving us access to the infinite expanses of the internet in addition to traditional phone functions, we should question our use of these omnipresent devices from time to time. After all, it's not just us who can immerse ourselves in the digital world 24 7; in return, others can use our smartphones to scrutinize us by every trick in the book. Keywords: NSA, cybercrime, advertising