On the merchant end, the transaction fees paid to online payment systems can cut such a large chunk out of the sale that it makes it not worth their while.

而对商家来说，向在线支付系统支付的交易费会大大减低销售额。

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As a merchant, it is important to understand how payment providers go about measuring risk and attempting to limit fraud through their systems.

作为一个商家，理解支付商如何通过他们的系统来掌控风险和限制诈骗是很重要的。

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Dynamic elements to transactions will make account data hard to steal or compromise, thus making merchant systems safer and more secure.

FORBES: EMV Chip Technology, Secure Electronic Payments

And, just like other search engines, FatLens does not include extraneous capabilities such as merchant grading systems, user reviews or feature comparisons.

FORBES: Magazine Article

He added that Visa's practices of not allowing use of rival currency conversion systems at merchant outlets also meant that retailers were denied opportunity to share the revenue arising from such transactions.

BBC: Visa sued by Australian competition watchdog