Meta Deploys On-Device Facial Recognition in Stella v273

Version 273.0.0.21 of com.facebook.stella ships SCRFD.pte, KPSAligner.pte and SFace.pte models totaling ~100 MB, a person_profiles/objects.db schema with vec0 cosine index, and a notification handler that outputs "Person Recognized" on match (buchodi.com, 4 Jun 2026). The pipeline accepts test images, produces 2048-dimension embeddings and queries the local index without server involvement in the observed build. No UI entry point or remote identity push was present on unenrolled accounts. The three models map directly to InsightFace SCRFD (ICLR 2022) and SFace architectures referenced in github.com/deepinsight/insightface and github.com/zhongyy/SFace. RLDrive sync framework exposes the write path for biometric records but showed no transmissions in the test account. The same model families appear in prior on-device detection work by MTCNN and dlib since 2015.