PortaPow 3rd Gen Data Blocker (Pack of 2) - Protect Against Juice Jacking

I hate mains adapters. I have drawers full of them. So for me, it was REALLY irritating when I bought a mains plug socket adapter with lots of nice USB sockets that can supposedly handle 2.4 A per port, and yet I measured my tablet charging from it at just 300 mA. Clearly it was meant for Apple iPad, and my tablet is Google/Android.Same with my computer. I *know* its USB sockets can output 1 A to phones and tablets, but the drivers to allow it to don't work on Windows 10 - they output at 0.5 A at max, and generally around the 380 mA mark. And at work, which supplies "universal" slots that are meant for Android, not Apple, and barely charges my iPhone. Some ports, like on TVs, won't supply any power to a phone or tablet at all, not even enough to trickle charge.A whole mythology has built up around "good cables" and "bad cables" and it's not hard to see why.The little PortaPow fixes these issues for me and allows charging by devices at the same speed as the original charger (confirmed with a USB test stick), with the added benefit that my embarrassing stored pictures don't pop up on the desktop of a rather large screen the moment I plug in my device at work, thanks to its "USB condom" functionality.Yes, you can produce similar effects by shorting out the data pins on a USB cable (or buying one that does so), but this brute force method won't help you if the charger only allows full current draw when detects specific devices, as many appear to now do. The PortaPow, in "spoofing" that your device is Apple/Android/Samsung and picking the best output no matter what it really is, is a much more elegant solution.I only have two criticisms. My first, smaller one is that PortaPow could be a bit shorter if it was arranged better inside - it can be a bit awkward when added to the length of the cable going into it, like a long stick hanging out of a USB socket. My second isn't to do with the PortaPow itself, but its intended usage: by bypassing the data pin negotiation, you can potentially draw more current from a USB port than was designed for. I don't know if PortaPow is safer than any other hacky "fast charge" cable/dongle in this respect. Many devices are clever and will cut off or lower current if necessary but some may not be and could potentially blow out something inside, so I would advise using PortaPow carefully.

I am amazed with this product!The delivery was next day to an Amazon Locker (£1.99) as it was cheaper and quicker than it to be posted via First Class. When it arrived, I was eager to open the package and plug it in to test its performance. I was shocked to see that when I plugged the module in between the device USB cable and the computer port, the power statistics on my device (iPhone 6 Plus) had dramatically changed. The power statistics without the block was 2 Watts @ 500mAh, after plugging the block in, the input changed to 12 Watts @ 2400mAh; a 6x improvement in Watt and almost 5x improvement in mAh into my device! My device usually takes 2 hours 30 minutes to charge, but with this module, I timed it to only take 1 hour 25 minutes.The module is no bigger than a standard USB drive, the dimensions being 450mmx120mmx100mm. The module only weighs a mere 80g! Helpfully, the 'wholly-red' design of the module means it is hard to loose at the bottom of a bag and found usually in an instant.I plan to take these on a Thomson 787 flight to Mexico next month, as the in-flight entertainment system hosts a USB port for displaying photos on the screen. Now I have this 'USB Condom' the system won't recognise my device as a phone and will only supply charging power while keeping away the risk of my data from my phone being transferred somewhere I don't want it to be.Overall, I am very very pleased with my purchase, and just under £7 for two is a steal! I WILL reccomend these to friends and family.

I have not tested this out but its has claimed to works well as seen in a video. Ive bought these a few times and will reorder and test it out .

Charging function worked, unable to test if they block data transefer

- Overview -I bought these a few weeks ago and I am yet to test these in public or a hotel. I had heard that viruses can be put onto phones however the operating system tends to have ways to stop this. I have also read reviews of using this to stop your phone connecting to your car when you want to charge it. This could also be used when charging your phone from a public computer but you do not want to connect to it.- Appearance -The appearance of the two data blockers is quite simple. They are both red (and can come in various colours) which I think allows it to stand out in a good way. The blockers also have printed text saying what they do.- Use -These blockers can be used in many places from public transport, hotels or in a car to stop data transfer. The limits are possibly endless.- Conclusion -Overall the product came faster than what amazon said it would which is a surprise for Royal Mail. The package came in a simple bag and within was a bag containing the two items.