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Let's say hypothetically that I have 3 devices that are all compatible and Bluetooth enabled.
Pairings:
Is there a way/easy way/accepted way to repeat the signal from #1 to all the #3s? I was hoping #2 could act as a hub maintaining state, but let the Bluetooth signal pass straight through to all the #3s (without #1 needing to directly connect to all the #3s individually).
What would be the best way to approach this kind of situation?
I think what I'm basically describing is like an Ethernet switch but for Bluetooth.
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Signal jammers are the easiest way to do this, but it's also useful to know how to jam a Bluetooth signal with Android phones and other devices. First, ensure that the Bluetooth blocker is emitting a signal by having it perform some sort of function.
Despite their weakness, Bluetooth signals don't require line of sight between devices. The radio waves will travel through walls easily, and their low power helps to reduce the chance of interference from other technologies that use radio waves, such as baby monitors and garage door openers.
How to Approve or Block Bluetooth pairing for Samsung Android devices. To block pairing with non-Approved Bluetooth devices, please put a * symbol in the Blocked Bluetooth devices field. Add MAC address of the the device which needs to be allowed to pair in Approved Bluetooth devices.
Bluetooth is not a line-of-sight wireless technology, which is to say the receiving end does not require an unobstructed path to the transmitter to achieve a strong Bluetooth signal. Like radio waves, Bluetooth signals can pass through solid objects. However, those objects will reduce the effective range of the signal.
The short answer is "no", there is not an easy or standard way to do this. What you are looking for would be a Bluetooth repeater. Bluetooth repeater devices do exist, but are proprietary, not standardized. For example, this one from a German solar power manufacture, specific to their devices.
Usually, Bluetooth networks are a simple star topology with a single master and one or more slaves - a piconet. However, it is possible to join multiple piconets into a larger scatternet.
The longer answer is that it is possible, but will require software support from Device #2. That may involve custom software or firmware development. Depending on your application, it may be simpler to consider adding another form of wireless connectivity into the system, such as wireless Ethernet.
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