On July 4th, 2018, I reported a security/privacy problem to Apple regarding the firmware on its now-discontinued AirPort wireless access points.
Per Apple's website, a "factory-default reset" of an AirPort should "remove any saved configurations and profiles" and should be sufficient for "selling or giving away your base station".
On at least AirPort Extreme AP firmware 7.7.9 and AirPort Express firmware 7.6.9 (the newest available for each device at the time of reporting), a "factory-default" reset just moves the configuration file to a new location on the device, and the old file and up to two additional previous configurations remain accessible on the device.
Seven years ago, I hacked together some code to update my Ecobee WiFi thermostat temperature depending on whether I was home. While my newer Ecobee thermostat has room occupancy sensors that make this tracking automatic, back then I had to poll my WiFi access point through SNMP to look for my phone's MAC address in its table of associated clients.
Recently I needed to do something similar to pass to my Z-Wave controller but it seems that Apple has removed SNMP support from its Airport Extreme firmware some time ago.
I've been using an 11" MacBook Air as my primary computer for six years. It's a great computer that satisfied a lot of requirements I had for a laptop: thin, lightweight, small form factor, excellent keyboard and touchpad, mostly silent, but not an Atom or Core M processor.
I've done a lot on this little computer, like compiling and maintaining an Android ROM, writing the Rails, iOS, and Android apps for Pushover, creating Lobsters, recording and editing 40 episodes of Garbage, and lots of OpenBSD development.
I've had an Ecobee thermostat in my house and now in my apartment for a number of years. It's a touchscreen thermostat equipped with 802.11 wireless that can be remotely adjusted and monitored from Ecobee's website as well as iPhone and Android applications. While the expected use case might be monitoring the temperature of one's home while at work, I often lazily use the phone applications while at home when I'm too cold to get out of bed to turn the heat up. Also, while Ecobee's website touts its "green" features and energy savings, working from home has always meant being unable to use automated work/home schedules and instead having to hold the same temperature all day. With some Ruby code and SNMP, I am now able to automatically detect when I am home and when I leave the apartment, and adjust the temperature automatically.