iio-sensor-proxy software package provides IIO sensors to D-Bus proxy, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install iio-sensor-proxy
iio-sensor-proxy is installed in your system.
Make ensure the iio-sensor-proxy package were installed using the commands given below,
$ sudo dpkg-query -l | grep iio-sensor-proxy *
You will get with iio-sensor-proxy package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Utilities |
| Package | iio-sensor-proxy |
| Version | 1.3-2 |
| Description | IIO sensors to D-Bus proxy |
| Sub Section | Utils |