 The Yondr products allows those hosting events in private venues to prevent attendees people from using their mobile phone or similar device while inside.People intending to enter such a space are first required to lock their device inside a Yondr pouch, taking the pouch with their device in with them.They cannot use their device until they leave, at least for example into a lobby or a dedicated area, where they tap the pouch against a Yondr unlocking point.