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Phase 3 of 4

UHF Doorway Transition, Single Door, Contactless

Swap the tap pad for the harder problem: reading tags at a distance, without a deliberate scan action. This is the door-table validation rig: one door, UHF range, tags mounted on laptops instead of held to a pad.

Draft

The Door-Table Rig

flowchart LR
                L["Laptop with
tamper-evident UHF tag"] --> DR["Student walks
past the door"]
                DR --> RD["UHF Pi HAT + antenna
2-4m read range"]
                RD --> LOG["Read logged,
no tap required"]
                LOG -.contract being defined.-> CAM["Camera system
integration"]

What's Being Built

  • Reader: UHF Pi HAT and antenna on a single door-table rig
  • Tags: tamper-evident, on-metal or long-range UHF, mounted on laptops
  • Range: validate 2 to 4 meter read and orientation behavior in the real trial room
  • Tag lifecycle: active, tampered or lost, reissued or retired
  • Camera contract: define the Camera Events interface with the face-scanning system
See Funding for the UHF hardware bill of materials.

Acceptance Criteria

  • Deploy the UHF Pi HAT and antenna on a single door-table rig
  • Switch to tamper-evident, on-metal or long-range UHF tags mounted on laptops
  • Validate 2 to 4 meter read range and orientation behavior in the real trial room
  • Investigate the bag-orientation problem, where a tag sits inside a closed backpack; see Project Summary
  • Introduce the tag lifecycle: active, tampered or lost, reissued or retired
  • Begin camera-system integration by defining the Camera Events contract with the face-scanning system
← Phase 2: Classroom Pilot
Project Team