I’ve been following this thread with interest after it caught my eye (due to the number of responses in such a short time). I live in LA, not San Francisco, but I think both cities tend to share many of the same trends at the same time.
Regarding the cashless payments – there are a number of food trucks and restaurants here in LA that already do this.
It’s for safety (no one can rob you if you don’t carry cash), it’s for keeping the employees honest (no one can pocket a few bucks while counting the register), it’s for ease during busy periods (you’re holding up the line trying to get more change, or open up rolls of coins), and it’s also for sanitation purposes (cash is pretty gross, and in a food truck, the people taking payments sometimes have to help out on the line).
I work in a food related industry that includes vending machines. We put credit card readers on our vending machines 3 years ago, in addition to them still being able to accept cash. Our sales were roughly 75/25 cash to card sales when we first implemented. Fast forward to today – it’s now 20/80 cash to card. If someone pockets some cash, it’s a lot more noticeable now since not as much cash comes in. So, it’s cut down on our sticky fingers that we used to have before. Some of our locations have asked us to remove the cash option on their machines and leave it as card only because of security/theft concerns.
The newer generations don’t carry cash like older generations do. I’m Gen X, and even most of my counterparts don’t carry much cash. I can tell you I have $11 in my wallet right now. It’s not because I’m broke, but because I can use a card everywhere I go – the grocery store, big box store, the gas station,etc. I’m not sure about SF, but here in LA, many of the parking meters are electronic and accept cards. There aren’t a lot of places that are cash only around here, except for the elote and fruit guys that come around my work. ($4 of my $11 will go towards a pineapple, cucumber, jicama fruit cup today). As a sign of the times, our gardener at the office, who is self employed, accepts credit card payments through Square, and our janitorial crew, who is a husband and wife team, accept payments through Paypal. That would be unheard of a few years ago.
One great example of a cashless business is the Costco gas station. They are card only. Doesn’t stop the crowds from going there. I’ve never heard anyone say they won’t get gas at Costco because they don’t take cash. It’s a great system, and keeps the lines moving.
Trucks (and businesses) like these are catering to the newer generations – the ones who are constantly on their phones, posting on social media etc. You can tell that just by looking at the pictures you posted – they’ve got all their QR codes for their social media accounts and their website displayed prominently. I googled them, and they are very active on Twitter, Instagram and their Facebook page. Their target audience isn’t “everyone”. Their target audience are the folks who are on their social media, posting pictures and comments throughout the day. Those people whip out their card, pay for their food, and then Instagram their plate. That’s how the word gets out about their food.