How to use U-Haul's Truck Share 24/7 system:

1. Book your rental truck online or through the U-Haul app, and select the “Mobile Pick Up” option during the checkout process.

2. On the day of your rental, you will receive an email or text message with instructions on how to access your rental truck using the Truck Share 24/7 system.

3. Open the U-Haul app on your smartphone and log in to your account.

4. Select the "Pick Up Truck" option in the app's menu and follow the prompts to complete the pickup process.

5. Use the app to locate the truck you rented and inspect it for any damages or issues.

6. Once you are satisfied with the condition of the truck, take a photo of your driver's license and submit it through the app. You may also be required to take a photo of yourself for identification purposes.

7. Follow the instructions in the app to unlock the truck and retrieve the key from the lockbox located on the vehicle. Make sure to note the key's location and keep it with you during your rental period.

8. Start the truck and begin your move. You can use the app to track your rental period and mileage, as well as to contact U-Haul customer service if you need assistance.

9. When you have finished your move, return the truck to the U-Haul location you selected during the booking process. Follow the instructions in the app to lock the truck and return the key to the lockbox.

That's it! With these steps, you should be able to use U-Haul's Truck Share 24/7 system to rent and access your rental truck. However, note that the exact process may vary based on your location and the type of equipment you rent.