When Square introduced tipping, Goretsky made suggestions he thought would improve it.

FORBES: Square's Early Testing Program Connects With Merchants

For the loyalty program, Goretsky suggested a pre-paid loyalty card, which locks customers in to coming back to merchants they have paid for.

FORBES: Square's Early Testing Program Connects With Merchants

Goretsky, who now uses the Square Register on the iPad, has given suggestions to the company, such as a loyalty program or gift cards.

FORBES: Square's Early Testing Program Connects With Merchants