Apple 開發新「對講機」技術 毋須連 WiFi 不用上網都可即時群組通話

有冇internet都唔係關鍵
冇電都用到先好當賣點啦

AirTag用埋uwb技術 靠藍芽啲tracker唔會做到精準定位

不如話係而家濫用研發呢個字
乜都叫研發

1937年已經發明咗出嚟啦

對講機
不如開發郵寄功能喇

問幾錢q唔再尷尬

十年前科技

佢係一個基於2013 年Apple 提出嘅iBeacon 概念推出嘅ibeacon hardware; 同piggyback on mobile phone location telemetry 嘅location tracker 完全係2回事

RuuviTag is a stand-alone Bluetooth 5 ready sensor beacon platform. It can be used as a standard Eddystone / iBeacon proximity beacon but it has the potential to be so much more.
By having a way to measure:
Ambient temperature
Relative humidity
Barometric pressure
Altitude
Acceleration

Source:
https://www.kickstarter.com/projects/463050344/ruuvitag-open-source-bluetooth-sensor-beacon
https://en.m.wikipedia.org/wiki/IBeacon

想像到有一日apple出個電話座都會係太空科技

zigbee protocol個bandwidth夠用咩? 得250kbps
而且zigbee要有coordinator喎

諗起以前feature phone 年代啲的士佬買Nokia用佢個對講機功能

對講機功能
夠哂啦

兩部機match完咪有coordinator