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(11)

EP 4 252 401 A1

(12)

(43) Date of publication: 04.10.2023 Bulletin 2023/40 (21) Application number: 21835900.8 (22) Date of filing: 18.11.2021

(51) International Patent Classification (IPC):  H04L 51/222(2022.01) H04L 51/58(2022.01) H04L 51/04(2022.01) H04L 51/10(2022.01) (52) Cooperative Patent Classification (CPC): H04L 51/04; H04L 51/10; H04L 51/222; H04L 51/58 (86) International application number: PCT/US2021/059895 (87) International publication number: WO 2022/115308 (02.06.2022 Gazette 2022/22)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 25.11.2020 US 202017247053 (71) Applicant: Snap Inc. Santa Monica, CA 90405 (US)	(72) Inventors: MONROY-HERNÁNDEZ, Andrés Santa Monica, California 90405 (US) THAM, Yu Jiang Santa Monica, California 90405 (US) (74) Representative: Kramer, Dani et al Mathys & Squire The Shard 32 London Bridge Street London SE1 9SG London SE1 9SG (GB)