iPhone 可以通过蓝牙进行近距离检测吗？
是否有可能在建筑物中放置 20 - 30 个充当接近探测器的蓝牙设备，并编写一个应用程序，根据距当前检测到的传感器的距离来计算建筑物中的位置。
我查看了 GameKit API，但没有看到任何有关计算与设备的距离的信息。
有人可以向我指出可用于此类应用程序的 Apple API 或第 3 方 API 的方向吗？
Would it be possible to fill a building with 20 - 30 bluetooth devices that act as proximity detectors and write an app that can calculate location in the building based on distance from the current detected sensors.
I've looked at the GameKit API, but I don't see anything about calculating distance from devices.
Can someone point me in the direction of an Apple API, or a 3rd party API that can be used for this kind of application.
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我们没有获得执行此操作所需的低级别蓝牙或 WiFi 控制。所以除非你越狱你不能。
We don't get the low level BlueTooth or WiFi control that would be required to do this. So unless you jailbreak you can't.
低电平蓝牙可以为任何类型的接近指示提供最大的 RSSI 和传输功率电平。
据我了解，可靠地计算与这些的距离是极其困难的。
Low level Bluetooth can provide RSSI and Trasmit power level at the maximum for any kind of proximity indications.
As I understand it is extremely difficult to calculate the distance from these reliably.
即使在只能检测到安全无线 AP 的住宅区，定位服务在估计位置方面也出奇地好。但我不知道如何将 AP 添加到该数据库中。
Location services is surprisingly good at estimating location even in a residential area with only secured wireless APs detectable. But how you would add your APs into that DB, I don't know.