As you know, there is a firewall named Great Fire Wall in china, and we can not directly access google, amazon, facebook, twitter, youtube, and so on. We need a VPN to access them.
WisAP is a platform which can build three products: WisLoRa, WisCore, and WisAP. WisCore is a voice gateway which is based on Amazon Alexa voice service, so it need to access Amazon, but in china people can't do it unless they have a VPN. Because that, we integrate a vpn service unabto_tunnel to the platform, WisAP.
So, feel free. It is not a 'spy backdoor'.~~