{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QUW762ENUHDKUKBAS5LCCDHLTP","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":"19880da92b124cc2d9957bb3dfe36d1d6730debf7d49f03fb8b6bb49e5b40079","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2018-07-18T14:37:27Z","title_canon_sha256":"8b58dff0c19b297ff50c62ac04238f480201c9f114c07402fedc553b1bb389bb"},"schema_version":"1.0","source":{"id":"1808.03320","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.03320","created_at":"2026-05-17T23:48:45Z"},{"alias_kind":"arxiv_version","alias_value":"1808.03320v2","created_at":"2026-05-17T23:48:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.03320","created_at":"2026-05-17T23:48:45Z"},{"alias_kind":"pith_short_12","alias_value":"QUW762ENUHDK","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QUW762ENUHDKUKBA","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QUW762EN","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:a35da8c19327bba20f7e694dc424e1dcfd1323d001a1d141eb1debe751c8d303","target":"graph","created_at":"2026-05-17T23:48:45Z","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":"In this paper, we present a systematic survey on the contextual information based proximity detection techniques. These techniques are heavily used for improving security and usability in Zero-Interaction based Co-presence Detection and Authentication (ZICDA) systems. In particular, the survey includes a discussion on the possible adversary and communication models along with the existing security attacks on ZICDA systems, and it reviews the state-of-the-art proximity detection techniques that make use of contextual information. These proximity detection techniques are commonly referred to as ","authors_text":"Chhagan Lal, Mauro Conti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2018-07-18T14:37:27Z","title":"A Survey on Context-based Co-presence Detection Techniques"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.03320","kind":"arxiv","version":2},"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:f3547dbe672b1272ce887714b734cb4cb5b9e3e61aaeadb57e33c16cb448d019","target":"record","created_at":"2026-05-17T23:48:45Z","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":"19880da92b124cc2d9957bb3dfe36d1d6730debf7d49f03fb8b6bb49e5b40079","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2018-07-18T14:37:27Z","title_canon_sha256":"8b58dff0c19b297ff50c62ac04238f480201c9f114c07402fedc553b1bb389bb"},"schema_version":"1.0","source":{"id":"1808.03320","kind":"arxiv","version":2}},"canonical_sha256":"852dff688da1c6aa28209756210ceb9bd0c850b783b9cd4de84c2dc46aa40570","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"852dff688da1c6aa28209756210ceb9bd0c850b783b9cd4de84c2dc46aa40570","first_computed_at":"2026-05-17T23:48:45.679034Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:45.679034Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LOXIDSCKXcsWQZvA6CJhmFKySCeCRMDdDgXJsfsnUM3G/Vb+e/ZbfricfxQg9kaj8jF12ymvGuviBY7pBY6IAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:45.679540Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.03320","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f3547dbe672b1272ce887714b734cb4cb5b9e3e61aaeadb57e33c16cb448d019","sha256:a35da8c19327bba20f7e694dc424e1dcfd1323d001a1d141eb1debe751c8d303"],"state_sha256":"1673e45a1cfafdd437ad3d7a32df6b8e666aa53fbcd78ae2f68ad6103a4ca321"}