First, ensure that the car is specifically meant for the Apptivity Hot Wheels game, and not a regular Hot Wheels car. You will be able to tell whether it is for Apptivity by looking for the contact points on the bottom of the car.
Ensure that the contact points are extended rather than retracted. There is a button on the bottom of the car that allows you to switch between traditional Hot Wheels car play (retracted) and Apptivity mode (extended).
Check the bottom of the car for debris, and wipe it with a clean, dry cloth.
Wipe your screen with a soft, dry cloth to ensure the best conductivity with the car.
Make sure you are holding the car in the right location in order for it to be recognized.
Hold it in the center and on the sides of the car while the tires are on the screen.
Make sure that you are not placing the car on the black or white frame around the iPad screen. You must keep the car only within the screen area.
Do not wear gloves or mittens since the car needs to come in contact with your fingertips.
On the main menu, tap “Play” then enter any level of the game, and put your King Pig figure down anywhere on the iPad screen once you are in that level.
If you want to come back to play later, simply lift up your fingers or the figure to get the pause menu.Then press the iPad home button to minimize the app.
You cannot go to the main menu to switch between characters without losing your progress.