Many smaller businesses are now using tap-and-go terminals for financial reasons as customers are much more likely to do small transactions, e.g. $2 using contactless more convenient and quicker as they do not need to enter in any PINs.
For this reason, I think mobile wallets will work even better in SMB businesses as people tend to be reluctant to go to their wallet to take the card out and since most people have their mobile handy, it will be extremely convenient for them to use the mobile instead like here.
Now here is it being used in practice these mobile wallets and look at the speed of the new mobile wallet over the contactless in speed for EFTPOS and Credit card transactions!
This is 4x faster than contactless!!!!