(Tutorial: https://www.raspberrypi.org/documentation/installation/installing-images/)

Enable picamera with commmand "sudo raspi-config" Interfacing Options > Pi Camera > Enable

Substep 1: Download files and extract the Data folder and PiDeliverySystem.py along with requirements.py to Desktop

Substep 2: Open terminal and run "Cd Desktop"

Substep 3: run "Python requirements.py"

Substep 4: Type in "Crontab -e"

Substep 5: Go to end of file and paste "@reboot sudo python /home/pi/Desktop/PiDeliverySystem.py"

Substep 6: Press Ctrl + o to save

Substep 7: Press Ctrl + x to exit

You are setup! Now just explain to your Delivery Person how to use it and you will get notified on delivery!