Sending sensors data to PC

I have a few questions about your product. Does Garmin (any product from their line) allows me connect to the device via ANT+ or bluetooth and send the data from sensors to PC. I want to create desktop application (for hall sports) where for example 5 people connect to the computer via bluetooth or ANT and the data from the sensors will be send to the computer.

So main questions are:
1. Am I able to get the sensors data from watches (or whatever product) to PC via bluetooth or ANT+.

2. Can I for example program some application which will run on the watches and it will be just for communication with the pc. What I mean is to create a custom application just for communication.

Thank you for any answer!