$1,000 Spray Makes Gadgets Waterproof

Rio writes "A new $1,000 spray claims to protect notebook computers, iPods, cell phones and other electronic gadgets from liquid, making them completely waterproof, a Local6.com report says. A creator of the technology said it could be used for emergency first-responders, bio-medical devices and historic preservation." This might be a bit of a flashback from last year.

Comments

Re:Not a Spray

[SkOink]

People seem to wonder a lot about the contacts and how they are sealed. The contacts are not, the surfaces are sealed. So, water can run in and out.

Think about this logically for a second. If by "surfaces" he means the circuit board itself, then this is called conformal coating and has been around for years. It is also not practical in small consumer electronics. If he means the surface of the device, then this requires sealing the entire device and making it fully waterproof (and not very useful).

By fact, by definition water damages electronics by shorting contacts together. If water is allowed to run in and out of the device, the contacts must be sealed.

I think that faq is a little disingenuous.

Re:Not a Spray

[hellwig]

So let me see if I understand this.

The device is not sealed against water (i.e. it's not wrapped in celophane), so water can flow freely throughout the device. At the same time, contacts are not sealed, meaning the water that can flow freely though-out the device can short the contacts that have not been covered (battery, headphone, button, etc...), essentially destroying the device (by burning out components, batteries, etc...).

In otherwords, the coating only keeps water off the surface of a device that by itself isn't prone to water damage to begin with? I.e. all the plastic-coated IC's out there will last just fine under water, as long as you don't apply power to them.

What about moving surfaces, such as the speaker or microphone diaphram? Those devices are sensitive to water (the felt or paper used probably won't stand-up to water), and the high-frequency makes it unlikely that the coating will adhere and stay on.

Can this coating be applied to a thouch-sensitive surface? Can it be applied to the lens of a camera without severely distorting the optics?

I once dropped my phone in a bowl of soup, and the phone told me I had plugged an unrecognized peripheral into the headphone jack. It took a couple hours of carefully disassemling, cleaning, and drying before I got it working again (luckily nothing burned-out), and it sounds like this coating wouldn't have helped (since the contacts within the headphone jack wouldn't have been coated anyway) . Nothing like spending $1000 on absolutely nothing.