Bluetooth Client or Server, which can connect more than 2 devices - MIT App Inventor Help - MIT App Inventor Community
![BlueDUN / BlueVPN: BlueDUN+: Connect custom application to external device with TCP/IP over bluetooth BlueDUN / BlueVPN: BlueDUN+: Connect custom application to external device with TCP/IP over bluetooth](http://3.bp.blogspot.com/-fXJKakds2YI/Vhp9583hkMI/AAAAAAAAB0M/DXXmEORuups/s1600/srv.png)
BlueDUN / BlueVPN: BlueDUN+: Connect custom application to external device with TCP/IP over bluetooth
![Bluetooth Gateway Bluetooth to 4G WiFi Ethernet RJ45 Industrial Bluetooth Router Serial Server|ABS Sensor| - AliExpress Bluetooth Gateway Bluetooth to 4G WiFi Ethernet RJ45 Industrial Bluetooth Router Serial Server|ABS Sensor| - AliExpress](https://ae01.alicdn.com/kf/Hbaf522f77c734ce78c0b0f1abc3ca3968/Bluetooth-Gateway-Bluetooth-to-4G-WiFi-Ethernet-RJ45-Industrial-Bluetooth-Router-Serial-Server.jpg)
Bluetooth Gateway Bluetooth to 4G WiFi Ethernet RJ45 Industrial Bluetooth Router Serial Server|ABS Sensor| - AliExpress
![Bluetooth Low Energy. Essentials for Creating Software with Device to Smartphone Connectivity. | by Stanfy | Medium Bluetooth Low Energy. Essentials for Creating Software with Device to Smartphone Connectivity. | by Stanfy | Medium](https://miro.medium.com/max/1400/0*-MPs-vNMh-z_GhDE.png)
Bluetooth Low Energy. Essentials for Creating Software with Device to Smartphone Connectivity. | by Stanfy | Medium
![Client and server are connected via Bluetooth. A wireless connection... | Download Scientific Diagram Client and server are connected via Bluetooth. A wireless connection... | Download Scientific Diagram](https://www.researchgate.net/profile/Massimo-Ancona-2/publication/4282397/figure/fig3/AS:314549694681090@1452005899814/Client-and-server-are-connected-via-Bluetooth-A-wireless-connection-can-be-used-instead.png)