What scanner app should I use for the digital scans? Follow We utilize the FusiformCAST iOS app which syncs the patient’s foot scan, patient order, and fulfillment information all in one convenient, HIPAA-secure location. Download it from the Apple App Store. Related articles Which 3D structure sensor scanner should I use? Where to download the Orpyx SI mobile application? How do I use the FusiformCAST app for digital scans? Comments 0 comments Please sign in to leave a comment.