{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SWKMC2ILDJLJDSMJWAL7QQJCX2","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"f0ecc1dc1312cee6ad45a3afdbedcd6f048542e3dbdf4bab49f2921b3af07338","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2017-08-30T17:11:10Z","title_canon_sha256":"cef24a995ec93e11559486f87cb6297c9f4256d2da4527f07f724d644617abff"},"schema_version":"1.0","source":{"id":"1708.09366","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.09366","created_at":"2026-05-18T00:36:20Z"},{"alias_kind":"arxiv_version","alias_value":"1708.09366v1","created_at":"2026-05-18T00:36:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.09366","created_at":"2026-05-18T00:36:20Z"},{"alias_kind":"pith_short_12","alias_value":"SWKMC2ILDJLJ","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SWKMC2ILDJLJDSMJ","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SWKMC2IL","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:d408fb58d33829eb8c7984a2fcfb139fe3f7840841906d973e38c975ab60d862","target":"graph","created_at":"2026-05-18T00:36:20Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We propose Secure Pick Up (SPU), a convenient, lightweight, in-device, non-intrusive and automatic-learning system for smartphone user authentication. Operating in the background, our system implicitly observes users' phone pick-up movements, the way they bend their arms when they pick up a smartphone to interact with the device, to authenticate the users.\n  Our SPU outperforms the state-of-the-art implicit authentication mechanisms in three main aspects: 1) SPU automatically learns the user's behavioral pattern without requiring a large amount of training data (especially those of other users","authors_text":"Hongxia Jin, Ruby B. Lee, Wei-Han Lee, Xiaochen Liu, Yilin Shen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2017-08-30T17:11:10Z","title":"Secure Pick Up: Implicit Authentication When You Start Using the Smartphone"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.09366","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:60df1c10b39c5318c6fd1caa091db43e71e0f5c48e5820073fad98d53e4684cf","target":"record","created_at":"2026-05-18T00:36:20Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"f0ecc1dc1312cee6ad45a3afdbedcd6f048542e3dbdf4bab49f2921b3af07338","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2017-08-30T17:11:10Z","title_canon_sha256":"cef24a995ec93e11559486f87cb6297c9f4256d2da4527f07f724d644617abff"},"schema_version":"1.0","source":{"id":"1708.09366","kind":"arxiv","version":1}},"canonical_sha256":"9594c1690b1a5691c989b017f84122beb6badae5a1ff175e4532c4e57478d929","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9594c1690b1a5691c989b017f84122beb6badae5a1ff175e4532c4e57478d929","first_computed_at":"2026-05-18T00:36:20.043844Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:20.043844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fWpfXPxtrPj/4ixAQ0832cf4tQ4J5EWW7E2TxDp8SC7BL9/DcM76hMolmeL0YtwOltnLRsIaf+y3r3sFMdN3Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:20.044609Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.09366","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:60df1c10b39c5318c6fd1caa091db43e71e0f5c48e5820073fad98d53e4684cf","sha256:d408fb58d33829eb8c7984a2fcfb139fe3f7840841906d973e38c975ab60d862"],"state_sha256":"7250f4b7f8543f053cb53ec89ad93525c92d6ca550285f2a5c11968e5ec98ebb"}