Fig. 1

Deki Reader device and clinic work flow. a The Deki Reader v100 and the Deki Reader v200 are shown. Both have a small footprint, an adjustable drawer into which the RDT is placed and are based on an embedded mobile phone with a touch screen and a camera. Only the screen of the mobile phone is visible to the user and the Deki Reader v200 has a larger screen (shown). The battery bank and charger connections (not visible) are contained in the device housing. b Overview of clinic workflow for the Deki Reader Field evaluation. The Deki Reader processes were integrated into standard of care HIV testing, with extra steps performed by the HCW shown with an asterix (*). The HCW captures patient details onto the Deki Reader and follows the onscreen prompts to complete the RDT test; the prompts must be acknowledged. Once the appropriate RDT incubation time is completed, the HCW will visually interpret the result and capture it onto the Deki Reader, before inserting the RDT into the RDT drawer for automated analysis. The visual results are shared with the patient and HTS completed. Once the patient has exited the clinic, the HCW captures the results into the paper-based registers. The automated RDT results are automatically uploaded to the Fionet platform, enabling centralised result storage, but were not available to the HCW in this evaluation