They like to bring candidates in for the tech screen, rather than do it over the phone.

I was told I had the option of bringing my laptop to the interview, which I welcomed, as I hate coding on whiteboards. When I mentioned this to the interviewer, they said they would have to figure out how to connect it. So much for that. He started the question off on the whiteboard and it was fairly involved, so it was a curve ball I wasn't expecting.

given a string, determine if that string exists in a matrix, meaning if the sequence exists as a set of adjacent letters in the matrix.