The simplest approach is to check every single point. Compute the distance from the user's location to every restaurant in the database, keep the ones that are close enough, and throw away the rest.
pixel_weight=0.001，详情可参考电影
，这一点在快连下载安装中也有详细论述
Activation Locks are disabled, accounts are removed, and device is factory reset。关于这个话题，PDF资料提供了深入分析
1.7. Collected Bibliography