@article{oai:ipsj.ixsq.nii.ac.jp:02009554,
 author = {戸川,浩汰 and 梶,克彦 and Kota Togawa and Katsuhiko Kaji},
 issue = {2},
 journal = {情報処理学会論文誌コンシューマ・デバイス＆システム（CDS）},
 month = {May},
 note = {屋内での滞在測位手法として，BLEビーコンを利用する方法が広がっている．これには天井や壁などに受信機を設置し，周囲を通過するBLEビーコンの識別子を受信し受信電波強度などを利用して測位する手法がある．この手法は対象者は配布されるBLEビーコンを携帯するだけでよいため，負担が小さく幅広い場面で利用が可能である点で優れている．一方で，BLEビーコンの発信する識別子が固定であるためプライバシの問題が大きい．本研究では識別子のランダムかつ定期的な更新により第三者による不正な追跡を防ぎつつ，特定のシステムのみが識別可能な携帯型BLEビーコン「PrivBeacon」と識別システムを提案し，開発および評価を行った．マイクロコンピュータとバッテリを基板上で接続し，筐体は3Dプリンタで制作した．利用者によって携帯しやすい形状は異なると考え2種類の形状バリエーションを制作した．約半年間の試験運用の結果，PrivBeaconは期待どおりに動作したが携帯性の課題が明らかとなった．, Methods using BLE beacons have become increasingly common for indoor stay estimation. In such systems, receivers are installed on ceilings or walls to capture identifiers broadcast by nearby BLE beacons, and user locations are estimated based on received signal strength and related data. Because users only need to carry a distributed BLE beacon, the burden on them is minimal, making this approach suitable for a wide range of applications. However, since BLE beacons continuously transmit fixed identifiers, they pose significant privacy concerns. In this study, we propose, develop, and evaluate PrivBeacon, a portable BLE beacon and identification system that prevents unauthorized third-party tracking by periodically and randomly updating its identifier while allowing recognition only by specific systems. The PrivBeacon integrates a microcomputer and a battery on a single board, and its casing was fabricated using a 3D printer. To accommodate different user preferences for portability, two physical design variations were created. Through approximately six months of practical operation, PrivBeacon functioned as intended, although issues related to portability were identified.},
 pages = {15--25},
 title = {プライバシを考慮した携帯型BLEビーコンデバイスとその識別システム},
 volume = {16},
 year = {2026}
}