Elmsley Count

Mechanics Grip Tutorial (my preferred method)
Pinch Grip Tutorial
Tutorial (Chris Ramsay/Xavior Spade)

See:
Card College Vol 2
The Elmsley Count Project by Liam Montier & Big Blind Media

Counting four cards as four but hiding the third card from the top by displaying one card twice. At the end of the count, the hidden card ends up in the fourth position from the top.

Can also be used to count five cards as four. In this case, the third and fourth cards from the top are the hidden cards.

The Jordan count works well with the Elmsley count since the card hidden in the Elmsley count end up on the bottom of the packet.