12:04. The office park lets out at noon and they all have forty-five minutes. You have fourteen people down the curb, a flat-top full of birria, and a guy at the window patting his pockets. "I left my card at my desk. You take Cash App?"
If the answer is "let me find my handle," the line stalls. If the answer is no, he walks to the truck across the lot and so does the guy behind him who heard it.
Nearly 60 million people use Cash App. At a truck window, the customer who forgot his card almost never forgot his phone. Here is how to take it without slowing the line.
How it works at the window
Whoever is on the window types the order total on a phone or tablet. A QR code for that amount appears. The customer scans it with Cash App and pays, and you are paid instantly. Next.
No card to hand up, no reader to pass back down, no receipt to sign against the side of the truck.
Set up the window
- Mount the tablet so the screen faces out. A tablet on a stand or a clamp on the window ledge lets the customer scan the code without reaching in.
- Tape the counter card to the window by the menu, so people see "Cash App" before they get to the front.
- Stick the door sticker on the side panel next to where people line up.
- Teach the window one line: "You can pay with Cash App right here."
The customer has their phone out while they read the menu. By the time they order, they are ready to scan.
Two trucks, one business
If you run two trucks, or a truck and a cart for events, give each its own counter QR code. Each code reports its own sales, so you know what the downtown truck did at lunch and what the brewery truck did that night, without comparing receipts on the dash.
They both run under one riverArk account because they are one business. The free plan covers a limited number of counter QR codes, and paid plans add more trucks.
If a friend's truck parks next to yours at an event and wants in, they sign up as their own business with their own riverArk and Strike accounts. Their sales never mix with yours.
Final, like cash
A taco is eaten before the customer reaches their car. A card payment can still come back weeks later as a dispute, and no truck has time to fight one over $14. A Cash App payment through riverArk cannot be charged back. If an order is wrong, fix it at the window like you always do.
What it costs
One rate on what moves through riverArk each month: 1% up to $5,000, 0.85% to $25,000, 0.75% above that. Most small businesses pay 1.5% to 3.5% to take cards.
Dynamic Pricing gives you a lever. At +1%, the customer covers the fee. Below zero, paying with Cash App earns them a small discount, which puts more people in the fast lane at the window.
Set it up in three steps
- Open a Strike business account and link your business bank. Your payments land there. With complete documents, approval usually takes a day or two. Follow the Strike setup guide.
- Sign up at ark.riverark.io, free to start, with your Strike username.
- Set up a counter QR code for each truck, mount the screen at the window and take a test payment from your own Cash App before you open.
The complete walkthrough, with video, is in the full setup guide.
See it from the customer's side first: pay the live demo at ark.riverark.io/demo. Then sign up at riverark.io.
Tips
Tips are live. On the Plus plan and above, your customer can tip when they pay with Cash App, so the crew gets it without anyone digging for cash or splitting a card tip at close.
FAQ
Can customers tip?
Yes. Tips are available on the Plus plan and above.
Do I need a card reader or anything new on the truck?
No. The phone or tablet you already have runs it.
Can I run two trucks on one account?
Yes, if they are the same business. Give each truck its own counter QR code and each one reports its own sales.
Can the customer scan from outside the window?
Yes. Face the screen out and they scan it from the curb.
What if someone says their order was wrong and wants money back?
Payments are final, like cash. Remake the order, or handle money back the way you handle a cash return.
When does the money hit?
You are paid the moment the customer pays. It lands in your Strike business account, and you move it to your bank whenever you want.