I've just opened a coffee shop in Los Angeles last month, and we don't take tips. We only use self-ordering iPads (I've custom coded an iOS app w/ Stripe Terminal for it), and we don't accept cash either. We've had a few customers baffled by the no-tipping policy, and still insisting that they leave a tip. Some even left cash on the counter or on the table. We had to chase a few of them down to return their money. Al…
It is almost never the case that the restaurant provides any of this to their employees and there is no transparency involved.
I honestly see it as a scam to charge higher prices without itemizing properly on the menu.
Even if you highlight the wage disparity in signage, I would have no way of knowing whether the information is accurate or just another piece of propaganda.