Mobile access Mobile access is the use of a mobile device, such as a smartphone, tablet or wearable, to gain access to secured doors, gates, networks, services and more. The technology behind this solution is Seos®, an innovative credential technology that offers the freedom to use any combination of mobile devices, from smart cards to smartphones, tablets or even smartwatch. The most common uses are for access to buildings, computer login, cashless sales through Internet of Things (Iot), timekeeping, printer authentication, etc. Communication is by NFC or Bluetooth. The best-known devices that use Seos® technology are integrated into the HID Mobile Access solution.