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(11)

EP 2 981 896 A1

(12)

(43) Date of publication: 10.02.2016 Bulletin 2016/06 (21) Application number: 14779020.8 (22) Date of filing: 01.04.2014

(51) International Patent Classification (IPC):  G06F 12/02(2006.01) H04L 12/911(2013.01) (86) International application number: PCT/US2014/032514 (87) International publication number: WO 2014/165507 (09.10.2014 Gazette 2014/41)

(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 (30) Priority: 02.04.2013 US 201313855518 02.04.2013 US 201313855498 02.04.2013 US 201313855449 (71) Applicant: Amazon Technologies, Inc. Seattle, WA 98108-1226 (US)

(72) Inventors: ENNAJI, Rachid Seattle, WA 98109-5210 (US) KIM, Jin, Seop Seattle, WA 98109-5210 (US) HELFRICH, Brian Seattle, WA 98109-5210 (US) WARD, David, John Seattle, WA 98109-5210 (US) ELLIOTT, Stephen, Alden Seattle, WA 98109-5210 (US) ZHAI, Peng Seattle, WA 98109-5210 (US) KAPILA, Dhanvi, Harsha Seattle, WA 98109-5210 (US) (74) Representative: Carpmaels & Ransford LLP  One Southampton Row London WC1B 5HA London WC1B 5HA (GB)