How can I enable the "Guided Access" mode on my iPhone or iPad?

On your iPhone or iPad open up "Settings", tap "General" and then "Accessibility". In this area you will find the option "Guided Access". Activate the function and key in a 4-digit PIN. Now open the Smartfrog app and start the camera mode. Press the HOME button three times in rapid succession and then tap the top right of "Starting to use the "guided access". Please note that to leave the mode the predetermined PIN will be required.