Let's say a hair salon uses this. By giving all that information to Google, wouldn't Google use that information to target the same customer with ads and 80% off coupons from competing hair salons in the same neighborhood the next time the person is due for an haircut? Personally, as a developer I love this, but for business owners, I'm not sure it's really in their interest to share all that data with Google.
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You explained very well about creating loyalty card for google wallet
Let's say a hair salon uses this. By giving all that information to Google, wouldn't Google use that information to target the same customer with ads and 80% off coupons from competing hair salons in the same neighborhood the next time the person is due for an haircut? Personally, as a developer I love this, but for business owners, I'm not sure it's really in their interest to share all that data with Google.