I left my I pad on the plane and I have two of them. So far, I am not getting any response that it was found .can I use a password or something onmy I pad I am using now to keep who ever finds my other one can’t get in?

Here is Apple’s advice for lost or stolen devices:

If your iPhone, iPad or iPod touch is lost or stolen – Apple Support

Use the Find My app to locate a lost or stolen device – Apple Support

Hey there Ipsych2,

Thanks for reaching out. We'll be happy to see how we can help with your iPad. We understand the concern of a missing device, so let's see if we can help with your data.

Do you know if you had a passcode assigned to your iPad before it was lost? With a passcode, you can rest easy as your data is secure with the passcode you created.

If you aren't sure, here's how that's set up: Use a passcode with your iPhone, iPad, or iPod touch

Let us know when you can. We'll be happy to continue working with you.

Cheers.