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I've recently ran across a remote shutter for in-built camera app using bluetooth on Android/iOS.
Here's an example link of the product that I found: Link (Not here to advertise, but to simply understand technology/mechanism behind it)
As far as I know, it is not possible to send remote commands to the in-built camera apps since there is really no way for the in-app camera apps to handle the remote commands.
However, the above video shows that such remote control is achieved using the bluetooth remote shutter. I noticed no external app needs to be installed to use such a remote shutter device. Is the device simply sending a touch event action to the phone?
I guess my real question is, how would such a remote device send 'take photo' command to the existing in-built camera apps?
Thanks,
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To pair the Bluetooth Remote Shutter, switch the remote switch on and press either the IOS or Android button to activate it. Then open the bluetooth settings on your device and you will see the shutter in your pairing options.
In definition, a remote shutter release is, as the term implies, a remote trigger that can be connected to your camera either wirelessly or by using a cable to perform its main function: to release the shutter even remotely without physically touching your camera's built-in shutter release button.
On your phone, go to Settings and then Accessibility and then Voice Control. Turn on the switch for Voice Control. Then open the Camera app and line up your shot. Say “Turn up the volume” or “Turn down the volume,” and the shutter will be triggered instead.
The selfie stick remotes are essentially tiny Bluetooth keyboards with just two keys. One is the "Volume Up" key to trigger iOS' native Camera shutter and the other key is "Enter" to trigger Android.
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