The cost is a critical point. But with the flood of cheap mobiles with decentish screens there must be a way of using them?
The phone id expect to be integrated into the control panel, and this would be used (as already is in some panels) for 2 way comms with the engineer, the arc etc. Id want the voice to be available when doing udl somehow.
Need bluetooth only if bluetooth is going to be used as an interface point. I dont think it has the range for us.
If panels had wifi or ethernet then an adhoc wifi link would be more beneficial for small stuff and if there is a router could be infrastructure mode. IMO using wifi, pstn and gprs for comms would be a good mix.
SD slot not needed IMO would prefer to be able to upload images to the panel software. That way of you have mutliple keypads it would be easier.
Depending on the OS of the keypad (phone os android etc) then it might allow 'apps' and an exisiting development environment. That way anything could be integrated, but i think early days a cctv app and a means to get video (or ipcams) on the keypad and through the ip web i/f of the panel would be fine.
re using keypads as wall mounted picture displays, it would need an sd card somewhere to hold these but id also like the option of logging into facebook and picasa etc and showing pictures from there. No point in loading pictures from everywhere.
Android as a keypad OS might be a good idea. Especially with google tv, android phone handsets, chrome laptops etc. Would allow an easier integration path for the manufacturer. Imagine getting your security system up on your google tv and it communicationg via IP picking up alarm info, logs, cctv images, access control etc.
From a HA point of view i personally want the HOME CONTROL PANEL to run my heating and lighting etc. Then it can learn my usual lighting habits. Then it can easily replay them when its set.
Problem as i see it, if our industry doesnt do it then another will.
Id also advice the comms is modular, ie if i want zigbee i buy a zigbee portal. If i want c bus i buy a c-bus portal, if i want cctv i buy that etc etc.