I don't know DUP. What is there view on surveillance?

There are a fair few tory members (not just backbenchers) who are against May's fetish for ripping up human rights bills and installing a camera in every bathroom.

DUP are fundamentalist christian hard-right tories, but on the other hand they're in Ireland and know a lot about the bad side of state power (despite nominally being on the side of the British government)

More in favor of it that a lot of tories the are to the right of the Conservatives even more so on social issues.

They are ultra-conservatives. Have a guess.

I have a sinking feeling they would love it all along a new border wall with Eire. :/

DUP want an open border between north and south.

Indeed, and this is likely to be a major sticking point with May. You can't really tell any kind of anti-immigrant story with a fully open border, but a fully open border is what peace in Ireland needs, and the DUP fully recognize that.

It's important to understand that support for moderate parties in Northern Ireland has only collapsed because both Sinn Fein and the DUP are seen as being fully committed to the peace.