Devices with inconspicuous camera function raise considerable data-protection questions, since secret recordings are not permitted in many situations. Comparable are smartpens like the Livescribe models, which however primarily serve audio recording and digitisation of notes and are usually used with the consent of conversation partners. The Hyundai Silver Eye is unlikely to establish itself on the market, especially since successors with higher resolution like the Golden Eye already exist. Users should in any case check whether corresponding recordings are legally permissible.