Please contact me before making any large (5+ keypads) orders. The processing time may be increased since all keypads are made to order and shipping may end up cheaper than you are charged through Etsy.

USPS is NOT an international shipping company located all around the world. They are the United States Postal Service and when a package enters your country, it is transferred to your country's local post. In some cases, your tracking updates will continue. In some, they might not show up through USPS's tracking system (and subsequently Etsy's,) but it will through your postal service's. For a lot of countries, there will be no tracking updates once it leaves the US. For the list of supported countries, please look here:

http://pe.usps.com/text/imm/immc2_022.htm

Yes, any (modern, meaning USB modern) OS should recognize it as a regular HID keyboard.

You will have the option of a refund of 50% of the cost of your order excluding shipping or you can pay for shipping again. In both cases, your package needs to have arrived to me for any resolution.

Please look at the tracking information for details first. This will usually tell you if the package is being sent back to me if you're a domestic customer. For international customers who don't see tracking updates after it leaves the US, please confirm that the address shown on your order page is 100% correct and has all pertinent information and allow for up to 3 times the shipping estimate time for it to come back to me if it is incorrect or in cases of unpaid customs fees.