(19)

(11)

EP 4 515 538 A1

(12)

(43) Date of publication: 05.03.2025 Bulletin 2025/10 (21) Application number: 23718512.9 (22) Date of filing: 29.03.2023

(51) International Patent Classification (IPC):  G11B 27/031(2006.01) G05D 1/00(2024.01) G11B 27/34(2006.01) (52) Cooperative Patent Classification (CPC): G11B 27/031; G11B 27/34 (86) International application number: PCT/US2023/016752 (87) International publication number: WO 2023/211616 (02.11.2023 Gazette 2023/44)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 27.04.2022 US 202263335424 P 29.11.2022 US 202218059879 (71) Applicant: SNAP, INC. Santa Monica CA 90405 (US)	(72) Inventors: JUDI, Terek Santa Monica, CA 90405 (US) KUCHER, Dmytro Santa Monica, CA 90405 (US) MO, Shaofeng Santa Monica, CA 90405 (US) RITCHARDS, Imani Santa Monica, CA 90405 (US) (74) Representative: Mathys & Squire  The Shard 32 London Bridge Street London SE1 9SG London SE1 9SG (GB)