Given that one needs to cover a large area with a WiFi connection, and wants to use three different wireless access points to do it, is it possible to set them up in such way, so that they all broadcast access to a single WiFi network (one name, one password, and the device, traveling back and forth from one unit coverage to another "wouldn't notices" the difference)?
Grab a couple used WRT54G's http://en.wikipedia.org/wiki/Linksys_WRT54G_series and load them up with DD-WRT and configure for a repeater bridge http://www.dd-wrt.com/wiki/index.php/Repeater_Bridge
though, you "would notice" since the AP names will be different, but, they all go back to a single uplink. With auto-connect you shouldn't notice much.
you could make the name the same, but from the DD-WRT site:
For the most part yes. Use the same channel, SSID and password and your users shouldn't notice an issue. Now if someone is say in a video conference they might be dropped at the switch off, but atleast at my work this is how we did it.