Participants will be recruited from outpatient diabetes and podiatry clinics at UT Health San Antonio, an academic medical center. The study itself is conducted as a home-use usability study: after initial training, participants set up and use the Feetsee foot-monitoring system in their own homes, following the US IFU and in-app instructions. Data will be collected via paper/electronic CRFs, patient questionnaires, and Feetsee device/app usage logs (exported to REDCap and secure sponsor databases).