As quoted above, a TEE is a hardware-backed secure area of the main processor (like ARM TrustZone or Intel SGX). Technically speaking, the TEE is just the hardware fortress (exceptions exist like TrustZone) whilst a Content Decryption Module (CDM) like Google’s Widevine, Apple’s FairPlay, and Microsoft’s PlayReady use the TEE to ensure cryptographic keys and decrypted media buffers are never exposed to the host operating system let alone the user’s browser. For the purposes of this article, I may at times refer to them interchangeably but all you need to know is that they work together and in any case, the host OS can’t whiff any of their farts so to speak.
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过去，单个商店“即买即退”模式，游客要逐个商店办理退税。2025年4月，商务部等6部门发布《关于进一步优化离境退税政策扩大入境消费的通知》，鼓励有条件的地区在大型商圈、街区、景区等境外旅客较集中的区域，设立“即买即退”集中退付点。