Hi mizzard,
Depending on your receiver’s hardware, it is possible to receive information from various devices of different types at the same time. You need to make sure that your receiver’s chipset supports multiple channels, and set it up so that each channel communicates with one device.
For a guide on how to use the ANT protocol properly, please refer to the ANT Protocol and Usage document found here:
http://www.thisisant.com/pages/developer-zone/ant-protocol-and-usage
Also, downloading the ANTware II software and its accompanying document is a great place to start with learning to send and receive information using ANT devices. To use ANTware II, you will require an ANT USB device. The program and the user manual can be found here:
http://www.thisisant.com/pages/developer-zone/software-tools
You can use ANTware II to mock up the communication of your devices during your development.
With regard to licensing, it really depends if you’re intending to commercialize products interoperable with other ANT+ products in the market. In essence, if you want your product be interoperable with other ANT+ devices, then it will need to go through ANT+ Certification. You can find more details regarding licensing for interoperable ANT+ products here
http://www.thisisant.com/pages/ant/ant-licensing
Otherwise, if your device does not require interoperability and everything you’re doing is proprietary, there are no additional requirements.
Regards,
laprairie