How does Lunchbox integrate with POS systems like Toast and Square, and are they competitors or potential complementary products?

I would say complementary. Qu, Revel, Brink POS are great examples. The reason I see them as complementary is, and again, I'm hoping here that POS systems continue to drive innovation in the POS sector.

Today, we have terminals, but Amazon has Amazon Go. The future for POS systems should look somewhere between where it is today and where Amazon Go is. It should be somewhere in the middle—not completely Amazon Go where it's grab and go, because I think there are some use cases—but it needs to get more towards the middle so it's more automated, less dependent on a lot of manual entries that we're making today. That's the future where POS needs to go. 

Some of them do get distracted and lean into the online ordering, but not so much that they don't invite an online ordering provider in to do some of the stuff that we do best. Just like we would not go do a POS system because we know we'll suck at it, we hopefully understand that POS systems lead the same way towards us. A lot of them have.