Watts Up

27 09 2017

Power to your iThing

🚽 WC is the traditional water closet

But talking about this would be off-topic.

Lets talk about *W* ireless *C* harging that means bringing Watts up to your iThing after laying it down on a little machine which functional principle was already born about 150 years ago.

Without the groundbreaking publication of “A Dynamical Theory of the Electromagnetic Field” in 1865, by Scottish J.C. Maxwell wireless charging wouldn’t be possible. So much for the copycat discussion and the simple fact that everything has its preceding ideas.

Again Apple isn’t the first offering WC but after listed as one of the 213 members of the Wireless Power Consortium they now want *to make the things better than they are*. And they will do it again. Others will follow.

How WC works …

ction chargers use an induction coil. An alternating current creates an alternating electromagnetic field around the coil. A second induction coil in the iPhone takes energy from the electromagnetic field and converts it back from alternating to direct electric current to charge the Li-Ion battery.

The source field must cover the receiving coil which results in a short range of energy transfer. So iPhone and charger must be in close contact without any metallic objects between them (they would be a shielding for the electromagnetic field) except an additional case for the iPhone (Leather or Silicone). A metal plate, sometimes used for magnetic car mounts, may already be obstructive.

Over greater distances this method is highly inefficient and wastes the vast majority of the energy put into the transmitting coil. Greater distances between sender and receiver coils can be achieved when the inductive charging system uses *resonant inductive coupling*.

Think of it like this …

A tuning fork can cause another to vibrate when both are tuned to the same pitch. Using the resonance phenomenon energy transfer can drastically be increased and wouldn’t require a close contact between charger and iPhone.

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xcited to see what’s coming next after Apple will massively engage in the WPC. AirPower is just the beginning.

Thanks for taking your time.





Say hello to the future

20 09 2017

Say goodbye to $1,000

My today’s feedback to Apple …

“We can add up to 5 different fingerprints for Touch ID. Perfect for family members who should have access.

This doesn’t work with Face ID. Poor.

It’s also poor that Face ID is the only biometric identification system. There are circumstances in which Face ID cannot be used (e.g. when wearing a face protection) but Touch ID. It’s a step backwards in usability to default to the old-fashioned passcode.”

The problem isn’t limited to a family. In hospitals or in Asia where I live people often wear a face protection when the got a cold or a viral infection, muslims wear facial veils, bikers wear a helmet and to just look at a message coming in they have to pull it off, outdoor activities may require safety glasses, and, and, and.

So I’m waiting another year for an improved approach to biometric authentication to simplify the usage. I’m sure we’ll see a return of Touch ID.

This time I can’t say that the company unveiled a finished product.

Microsoft appreciates serious suggestions for feature enhancements via mail but I won’t get any reply from Apple.

See you in the future.





Hey Apple!

19 08 2017

Electronically signed documents are legally invalid in most countries of the world.

And there is even more.

  • Sending a document as an attachment to an unencrypted mail is like an invitation for bad boys to use the signature done with the  Pencil.
  • Using it for business purposes would also require to keep it accessible over 5 to 10 years. But where’s your document management and digital archiving support?

No, no.

It’s not that easy you want us to see this feature.

Thanks for dropping by.