Honestly, there should a thread of "Best Practices of accepting deliveries" to maximize the probability of getting good products delivered safely and successfully.
I am compiling some tips to begin. Please add as per experience/knowledge:
1. Be Polite with the Delivery Person. Ask him/her water or wait inside for a few minutes
2. Tip the Delivery Person. They would happily wait for a few minutes.
3. Keep all testing apparatus (Laptop, Cables, Electricity Extension Boards) read for use to test with the delivered product.
4. Inform family members about Open Box delivery and tell them NOT to share OTP quickly.
5. Avoid buying "Non-Returnable" Items.
6. If testing is not possible during Open-Box, at least record the procedure before giving the OTP.