If you're looking for a portable Thinkpad-quality keyboard, the closest thing you're going to get was ironically originally made for Pocket PCs years ago -- it'

If you're looking for a portable Thinkpad-quality keyboard, the closest thing you're going to get was ironically originally made for Pocket PCs years ago -- it's a 4-segment folding keyboard, the design of which appears to have been updated to work with Bluetooth and is now selling as the ludicrously overpriced "Amigo 2.0" or the Chinese-branded GK 308.