gbon

Amazon knows how to apply the VAT in EU:

https://www.amazon.com/gp/help/customer/display.html?nodeId=...

I want only purchase the ebook paying the right price, without be bullied by anyone (Gumroad or other monopolists).

In EU you have to pay the VAT required by the law of customer's country. So, yes, tha law if different for each country in EU. Here, for example, an elegible e-book must have an ISBN code. That is the requirement. Amazon applies correctly the taxes. Gumroad think to be different. Moreover, Amazon explains transparently how the taxes are applied on their websites.

https://www.amazon.com/gp/help/customer/display.html?nodeId=...

Before contacting them, I asked to Paypal: they confirmed that the VAT applied is specified by the seller (Gumroad). So I suspect a fraud, too. It depends from who really collect the VAT and who have to pay that tax to the EU country. In any case their behaviour is questionable.

Besides the software compatibility with protocols different from GSM (2G) there is serious hardware problem: RLT-SDR dongles can't operate above 1.4 GHz. This limit is for the better models (i.e. those with a better shielding ). In my experience the cheap models as the one mentioned in the article have problems above 1 GHz. I'm telling you because GSM support ~900 Mhz and ~1800 Mhz frequencies and, as I tested, only the traffic around 900Mhz is visible. So, even in the 2G domain, you can't see everything.

I did the same, with an openssh patch: https://github.com/gbonacini/openssh_password_logger