_:n0ab6ece84f2f450683af963f7dd0bb57xb31
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"TL;DR More access points, all set to lower power. Stop trying to stretch WIFI over 100 ft. Your barcode scanner radios can't respond strong enough.I struggled with these kinds of devices with failing access points. 450 meter long shop with 2 working access points running full power radios. I replaced several dead and fried access points with new hardware. Even with 7 access points across the plant the stupid scanners would hang onto the first access point it licked in the morning wherever it started up and would hang on to that bad signal all the way to the other end of the shop while passing 5 other access points and ignoring the one right above it. After turning down the access point radios to low power, the barcode scanners stopped seeing signal from the AP at the other end of the shop and started to decide on their own to switch to the nearest AP.Your barcode devices have very, very, ultra, stupid bad, terrible, terra-bad antennas and weak under-powered super low-powered radios with just as bad antennas crammed into a hammer shaped plastic and rubber body. They are also the cheapest component the vendor can find, likely build with a single wireless access point on a residential access point in mind. Switching to the next nearest WAP when signal gets low and ratchets down below 1 mbit is far away from the logic in these stupid machines. It's logic is \"I can still hear the WAP I've been talking to since I booted, I must squeak at it!\"So here is the thing, your access points set to high radio output are powered by main power or POE. They can use all the radio power in they want up to FCC regs. They also have gigantic antennas (compared to the barcode scanner). Your barcode scanners are on battery and have a hell of a lot of power saving stuff going on, terrible antenna design to fit all in a tiny package the size of a small hand sledge hammer (and often used as a sledge hammer by the looks of the rubber and plastic damages).The wireless access points are analogous to an opera singer on a stage. They can belt out tunes loudly. Your barcode scanners are analogous to an angry infant passing gas in the back row of the theater. They can hear everything, but can barely muster a squeak to respond back to the singer on the stage. Have the singer hold the infant and sing softly - put in access points closer to the barcode scanners and they will both hear each other better.Unless you go for a high end master controller WAP system, your clients devices make the decision to switch to another access point. If you get a master controller WAP system, the controller will kick clients off access points they are talking to if the signal degrades and another access point can talk to it better. This kind of system can be expensive. Going with more access points with lower power settings will cause clients to decide to hop to the next access point on their own without involving a controller system to kick them over and be tons cheaper and easier to manage (or set and forget, not manage)."
<https://frontend.spiceworks.com/topic/2114626-warehouse-wireless-debacle?page=1#entry-7567152>