邊方明
2021-4-21 18:21:42
1. The Find My app can help you locate a missing Mac — even if it’s offline or sleeping — by sending out Bluetooth signals that can be detected by nearby Apple devices. These devices then relay the detected location of your Mac to iCloud so you can locate it. It’s all anonymous and encrypted end‑to‑end so no one — including Apple — knows the identity of any reporting device or the location of your Mac. And it all happens silently using tiny bits of data that piggyback on existing network traffic. So there’s no need to worry about your battery life, your data usage or your privacy being compromised.
如果個sw implementation 要wake CPU 大核就絕對唔止慳咁少
要lab test 就唔會有相關媒體或者youtuber 陪你喇但可以俾個blackbox testing 思路你:
toggle on/off Find My Network and record standby time
whitebox testing 就係developer 自己知系統幾耐會piggyback send back 一次data 同幾耐collect 一次data, 用frequency 同每次operation 用到既電力評估到power consumption impact
但你要留意佢本身同Apple server 之間都會send data (Settings > Celluar > Apple services) 情況會係e.g. send 40KB data 呢個operation 會唔會一定食電過send 35KB data
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