Algodoo

Card reader 4 includes a percentage indicator, support for using multiple cards during the simulation (i.e. not having to pause and reload after each card!), and a binary reader, as in CR3.

You control the reader. Hold right to go right and left to go back. You will notice a light to the left of the display. Pressing "j" will cause the light to turn red and the latch holding the reader still will disengage, allowing you to move the reader. Red means the latch is down, or not engaging, while green means the latch is up. The reader will automatically latch on, if you drive over it from right to left. Also, you can automatically unlatch the reader by pressing right arrow as normal. This means you don`t need to press "j" at all. The pen now has a fade time of 1 minute. Press "m" to reset the binary and hold until all the numbers are reset.

Simplified Instructions: Insert your card. Hold right all the way until 100%. Now remove the card. Hold left arrow to return to the beginning. After the pen fades, and you reset the binary, you are ready for your next card.