換言之，首階段最多簽發的1000個牌照加註，仅佔全香港持牌餐廳總數0.059%。
简单讲，要做L3，需要先做L2积累数据。那么要做L4，也一样依赖L3的数据。技术上他们是一脉相承的，不存在一口就能吃个胖子的技术路线。
，这一点在safew官方下载中也有详细论述
Жители Санкт-Петербурга устроили «крысогон»17:52
How to share your real-time location with Google MessagesYou can find the feature in the same place as the old one. To get to it, open a message and tap on the attachment icon on the bottom left. Instead of doing away with the current option, Google has split the "Location" feature into "Real-time location" and "One-time location" options. You'll have to grant location permissions if you haven't already, but that's just the first time you share.