PayPal and Square are separately trying to persuade retailers to trade in their old-fashioned cash registers for the companies’ competing point-of-sale products.

If US retailers adopt the PayPal Here card reader and “stop using a dusty old cash register” to accept credit and debit cards, then the company is waiving transaction fees until the end of the year.

The company is also making the same offer available for solutions pre-integrated with PayPal from its point-of-sale partners including Erply, Leaf, Leapset, NCR Silver, Shopkeep and Vend.

Meanwhile Square has launched a stand for the iPad which is also designed to encourage a switch from the traditional cash register. Retailers already use the iPad to process payments with Square’s card reader but the new stand is designed to encourage them to completely do away with a register.

According to Techcrunch, 13 merchants at 50 locations are using the stand. The take-up includes coffee shops in San Francisco and New York.