Tablet Profile

Mandatory Requirements
  1. 20cm (8") to 25cm (10") display. No particular size in this range is consistently preferred, each facility may have their own preference.

  2. Glass fascia. Vendors are encouraged to consider the option of stronger tempered glass as some correctional facilities consider this a valuable feature.

  3. Internal PSU, or common USB charging. An external PSU is not suitable as it can be used as a flail weapon.

  4. Chassis secured to ensure prisoners can not gain access to the internal components, perhaps with Tamper-Resistant Torx (also known as Torx TR) or pin-in Torx.

  5. Internal speakers.

  6. 3.5mm TRS stereo jack and TS mic, or combined TRRS audio jack.

  7. Front camera. A rear camera is not necessary, although inclusion of one is acceptable.

  8. No TV receiver.

  9. No FM receiver.

  10. No cellular modem.

  11. 2G or more RAM.

  12. 2G or more storage.

  13. Should support latest release of Google Android (includes GMS) or Google Android Go, although v10+ is acceptable. Earlier versions than v10 are not currently supported by PrisonPC.

  14. Must support Android Verified Boot (AVB).

  15. AVB implementation must include rollback protection.

  16. Must not boot if the AVB verification failed at boot time.

  17. Must support Factory Reset Protection.

Hardened PrisonPC PILS Tablet
Torx Tamper-resistent Screw
Valuable (non-mandatory) Features
  1. No accessible mass storage slots (e.g. SD-Card reader), excepting the mandatory USB ports for HID devices or power. To reduce manufacturing complexity and cost it is acceptable to include these connectors but leave the device disconnected from the controller.

  2. Transparent chassis, with suitable electromagnetic shielding. For high-security facilities, vendors are encouraged to consider an optional transparent chassis.

  3. For charging, USB-C charging is highly recommended (over micro or mini USB) as it less prone to damage.

  4. Hardened chassis.

  5. Tablet rear hand holder.

  6. Zero-touch enrolment may be valuable for some correctional facilities, especially those with a considerable number of tablets.