Key2Pay Original – Einstein


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LAKS PAY tells stories in the world of contactless payment – discover the artwork – Key2Pay “EINSTEIN”

In my A-levels, I chose physics.
I was prepared for Albert Einstein, but was only asked about the Earth’s gravitational field. E=MC2 is the famous formula that everyone knows but no one really understands.
That’s why I created this Key2Pay “EINSTEIN”. enjoy it – LAKS

Almost Simple:

Relativity is the word for the fact that things only have meaning in relation to other things.
In physics, relativity refers to Einstein’s theory that time and space are not absolute.
If you believe there are absolute, correct answers to everything, you probably don’t like relativity, which is the opposite of absolutism.

Quite technical:

E = mc2, equation in German-born physicist Albert Einstein’s special theory of relativity, which expresses that mass and energy are the same physical entity and can be converted into each other.
In the equation, the increased relativistic mass (m) of a body times the speed of light squared (c2) equals the kinetic energy (E) of that body.
In the physical theories that preceded special relativity, mass and energy were considered to be different quantities.
Moreover, the energy of a body at rest could be assigned any value. In special relativity, however, the energy of a body at rest is determined as mc2. Thus, every body with a rest mass m has mc2 of “rest energy” potentially available for conversion into other forms of energy. The mass-energy relation also implies that the rest mass of the body decreases when energy is released from the body during such a conversion. Such a conversion of rest energy into other forms of energy occurs in ordinary chemical reactions, but nuclear reactions involve much greater conversions.
This is especially true of nuclear fusion reactions, in which hydrogen is converted
to helium, in which 0.7 per cent of the original rest energy of hydrogen is converted into other forms of energy.
Stars like the Sun shine because of the energy released from the residual energy of hydrogen atoms fused into helium.

An explanation as I see it:

From the special theory of relativity it follows that mass and energy are just different manifestations of the same thing – a somewhat unfamiliar conception for the average person. Moreover, the equation E = mc2, in which energy is equated with mass, multiplied by the square speed of light, showed that a very small amount of mass can be converted into a very large amount of energy and vice versa. The mass and the energy were indeed equivalent according to the formula mentioned earlier.

The Key2Pay keychain has an integrated contactless NFC chip and makes your payments much easier and smoother – Stop searching for your wallet or mobile phone at the cash desk – all you need is your favorite wearable.

Its convenient, contactless payment function (NFC) works completely independently

NO batteries – NO chargers – NO smartphones needed.


No charging
Because of its analog technology, LAKS wearables never need charging. They are always ready to pay.
Easier & more hygienic
Always have your money with you without even your smartphone. No need of touching buttons or exchanging cash. Just pay contactless.
SKU: key2pay-original-einstein Category:


Download the App here for Android and here for iOS Once you receive your LAKS PAY wearable, open the LAKS PAY app and link your payment card to your wearable. Watch the video for a detailed description.

Supported banks & cards

Check if you have a payment card that can be connected to our wearables here.

Key2Pay Original

Product Details

Length: 5 cm
Width: 2,5 cm
Height: 0,4 cm

Special 4C printing with polymer coating. UV-resistant, scratch resistant, waterproof.

Please be gentle

You can clean your Key2Pay with water-based household soaps and detergents. Solvent-based household chemicals may damage your Wearable.

Avoid electromagnetic fields

Some household electrical appliances can generate EM fields that are strong enough to affect the pay chip of your LAKS wearables. Do not leave your wearable near electrical appliances as it will stop working.

Do not bend

Bending will damage the integrated chip of your Key2Pay.

Made to last

Our Key2Pay is made from a high quality material that will survive every bump. Because of the smooth finish you will love to hold it in your hand.

How to pay


Hold the keyfob to the payment terminal.


Keep your hand steady for a few seconds.


The lights turn green and you hear a beep. Done!

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Key2Pay Original - Einstein


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