It's a description of Zero-Handoff in Ubiquiti's 1st-gen APs. Fast Roaming is 802.11r. Getting good roaming is theoretically not that difficult. Lower transmit

It's a description of Zero-Handoff in Ubiquiti's 1st-gen APs. Fast Roaming is 802.11r. Getting good roaming is theoretically not that difficult. Lower transmit power so that the device's RSSI in the locations where it's expected to transition to another AP (or off WiFi) are lower than the device's roam scanning threshold (-70 for iOS). Set the minRSSI on APs to something sensible and enable strict mode so that more troublesome devices aren't able to cling to an AP @ -85. In practice, tweaking those knobs and figuring out placement and channel planning start to get tough beyond 3 APs.