Iria

"If you're sick of dragging a sweaty finger around on your laptop's touchpad, but equally tired of toting a mouse around with your otherwise ultra-mobile machine, Logitech's V550 Nano promises to liberate you from carrying around that fist-sized plastic anchor by snapping it directly to your notebook. We found the concept surprisingly useful, and very well executed on Logitech's behalf, but your results may vary depending on how you use your notebook."
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Source: Digital Trends