Here is a new Solution!

A brand new design that requires changing only your keys instead
of changing your door lock

Slot is a mechanism that contains a case (3,5x6 cm) and keys that are
shaped especially for this case

Expect the unexpected...
European signature on keychain design; SLOT!..

Best thing that happened to key since invention of the key itself!..

The Keys gotrid of extra weight!

On the left you see a regular key before the SLOT system was made.
After losing about 40% of its weight, we face with a completely
different key.
This is a radical change that hasn't been made for about 150 years.
Replace your keys! Let your keys and your pocket
lose weight!