This would work - Unifi AP (standard) e.g. from
http://www.4gon.co.uk/ubiquiti-unifi-uap-single-unit...
or
http://www.msdist.co.uk/product_ubiquiti_unifi.php
I know it says enterprise Wi-Fi but you can still start with just one, just if you ever add more you can manage the SSIDs and guests (with isolation) for all APs from one place. The controller software (service) is included (free) and if you leave it running it will give you stats and info on connected stations. But it doesn't mind if you close the software once it has finished configuring.
It is passive PoE meaning you can keep the power brick inside the house at the other end of the cable.
It looks like a smoke alarm and is very lightweight meaning you can often just use velcro / sticky-pad onto the ceiling / wall or just pop it up on a shelf, but it also includes screws and backplate e.g. for ceiling tile.
There is a dual-band option (Pro) for an extra £100 which is a little pricey unless you are doing a larger scale install,
so if 5GHz (a/n) support is important you could use another AP or router (as usual to make a router into an access point you turn off DHCP and only using the LAN ports):
http://www.dabs.com/products/edimax-br-6475nd-300mbp...
or
http://www.dabs.com/products/asus-rt-n56u-black-diam...
or
http://www.amazon.co.uk/Asus-EA-N66-Wireless-Gigabit...
you would need to check but the ASUS router at least should be able to do guest networks
To have roaming from the AP inside your house you just match the SSID and security details (passphrase and mode) on all APs and the device (laptop / phone) picks whichever it feels is better.
If you have the choice prefer WPA2 only, AES (sometimes specifies CCMP) mode (with pre-shared key) - devices can generally perform this encryption in the chipset and still attain the max data rate). Whereas WEP (and TKIP) will be slower.
prompt $P - Invalid drive specification - Abort, Retry, Fail? $G
prlzx on iDNET: ADSL2+ / 21CN at ~4Mbps / 700kbps with IP4/6
Edited by prlzx (Wed 08-May-13 00:52:22)