They're only playing where they are whilst arranging for a new ground to be sought back in Bracknell as I understand it.
I am not so sure that's true, actually. They have taken over Bottom Meadow in Sandhurst, repainted it, and I thought they saw it as a long term plan to develop Bottom Meadow, rather than return to Bracknell, even though they had spent a lot of money on Larges Lane there. As has been said,they are very well funded and have probably got a National South level team for their first ever season at step 3.
When I saw them in August (have I mentioned that?), I don't recall any automatic gates, but showed my ticket to a human being (I can't recall if it was scanned or just a visual check). They are a wealthy club, though, and may perhaps have been erected some automatic gates since then.