There are two software packages need to install: openant and ant-fs.
1. Steps to install openant
git clone https://github.com/Tigge/openant
cd openant
sudo python setup.py install
2. steps to install ANT-FS
git clone https://github.com/Tigge/antfs-cli
cd antfs-cli
sudo python setup.py install
3. Pair your ant receiver with your watch
antfs-cli --pair
4. Read data from your watch
antfs-cli
The downloaded fit data from your watch is saved at
~/.config/antfs-cli/###/activities/