但好消息是，政策环境正在松动。
公安机关向有关单位和个人收集、调取证据时，应当告知其必须如实提供证据，以及伪造、隐匿、毁灭证据或者提供虚假证言应当承担的法律责任。
，更多细节参见91视频
US State Colorado Wants Operating Systems (Including Linux) to Tell Every App How Old You Are。safew官方版本下载是该领域的重要参考
Quadtree-based image compression formats and level-of-detail systems all work this way. Satellite imagery, terrain rendering, and geographic information systems use quadtree decomposition to serve data at varying resolutions: zoomed out, you see large coarse blocks; zoomed in, you see fine-grained tiles. The same principle extends to three dimensions (octrees) for volume rendering and 3D spatial indexing.，这一点在爱思助手下载最新版本中也有详细论述