This app uses the Structure SDK / TrueDepth camera for 3D scanning. Supported device list (updated regularly):
https://techmed3d.zohodesk.com/portal/en/kb/articles/minimun-device-requirements
From Pectus Services - the creator of the world's most successful pectus brace comes our PectusScan App. Using an attached Structure Sensor and ipad it takes a 3-D Scan of a pectus chest deformity along with photos using the connected ipad. Just hit the Send button when done! Then our T-Scan software precisely measures and analyzes the chest deformity to aid in the fabrication of a fully customized T-Joe Pectus Brace. 3D Scanning is safe with no harmful radiation like an xray or ct scan. Additional scans are taken during treatment to monitor progress and improvement during treatment.