Anything you can do, PayPal can copy better -- at least that's what it'd like you to think.

OK, so eBay's (EBAY 0.31%) PayPal hasn't done anything illegal -- it's not like it flat-out ripped off anyone else's technology -- but PayPal continues to redefine the gray area of idea emulation at every turn.

Specifically, eBay has some sort of Square-envy that it can't seem to get out of its system. In a true "if you can't beat them, be them" strategy, PayPal moved one step closer in its metamorphosis yesterday to becoming Square 2.0.

The evolution of Square 2.0
Square, the privately held battering ram aimed directly at PayPal's mobile payment business, introduced a mobile swipe device shortly after it was formed three years ago. Shaped unsurprisingly like a square, the device can be plugged directly into mobile devices, allowing small businesses and entrepreneurs to capture payment and signature data, all from their mobile platform. In return for this convenience, Square skims a 2.75% fee off the top and deposits the balance in its customers' checking accounts the next business day. Square is now on pace for about $8 billion in annual dollar transactions -- quadrupling where it was just one year ago.

Earlier this year, eBay's PayPal followed suit by offering PayPal Here, a card-swiping device that can also be attached to mobile devices and is shaped like a triangle. Aside from the fee of 2.7%, which is 5 basis points lower than Square, the idea is basically the same.

Fast-forward to August, when Square announced that it had landed a white elephant in Starbucks (SBUX -1.02%). The deal would bring Square's mobile payment devices to 7,000 of Starbucks' 17,000 stores within months. At the time, the only deal PayPal was working on involved testing its mobile payment platform at 30 McDonald's (MCD -0.42%) restaurants in France. The solution: one-up Square again. Just two weeks after Square's announcement, PayPal announced a partnership with Discover Financial Services (DFS -2.60%), expanding its processing reach to millions.

Transformation complete
Then came yesterday's rumored announcement from Reuters that PayPal that it would be laying off somewhere in the neighborhood of 400 employees (about 3% of its workforce) in order to better focus on its product and become smaller, like a start-up company. Furthermore, eBay CEO John Donahoe described PayPal president David Marcus as having "start-up energy" when he was brought in to head PayPal.

Clearly Square isn't the only mobile payment competition for eBay's PayPal. Google (GOOGL -1.97%) has also developed its own mobile payment platform known as Google Wallet, and who knows what other companies are tinkering with the idea of offering their own take on mobile payment processing devices. What I do know is this: If a technology presents itself as competition to PayPal, you can count on some old-fashioned innovation through duplication.

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