Schemes/ Mechanisms that could provide one time decryption?

I am quite familiar with most of the common undergrad/grad security foundations; but I couldn’t find anything related to this scenario:

A scheme/system where a piece of data can only be ‘decrypted’ AND read only once (potentially in a computer program).

Is it even possible? I have heard such things are there in the ‘hardware world’ (?). If my question is imprecise/incomplete, I’m willing to update. But I am actually interested in a generic design/protocol at the same time.

How to provide validation feedback for multiple rows in a grid?

I’m designing a page that needs to let a user upload a spreadsheet with content to be imported into my database. I anticipate that some of these rows will contain data that’s fine in Excel, but invalid in the destination table, for instance, a string field that’s too long, or a user id that’s a duplicate of one already existing: standard validation stuff.

So I need some intermediate UI to take the proposed import and show the rows that are valid and invalid, and for the invalid rows, to indicate what the problem is. So far, I can imagine something like this:

enter image description here

The problem is that I’m not seeing how to indicate what the user needs to change in a granular way. I could highlight only the invalid cells, but I’m not sure where to put a more detailed message, like Reference name must be a maximum of 6 characters (which would be true for the whole column) or This user id is already in use (which would only be true of the one cell).

Normally, I’d put this next to the offending input control, but the message might not fit in the cell, and I can’t put it before or after the grid, because there might be dozens of them, and I can’t see how to stack the messages for a single row before or after that row, because there might still be a few of them per row.

What’s a good UI pattern for a situation like this?

Does anyone use Baymard Institute Premium? Do they provide reliable and up-to-date information?

I’m trying to decide if I want to purchase premium access to Baymard Institute Premium, or a volume (essentially an ebook) from Nielsen Norman Group.

I really like how interactive Baymard’s premium service is, and I think I’ll be able to reference it as I work much more easily than an e-book. So, the UX of their UX information is better than that of an e-book. 🙂 However, I’m not sure if their best practices are reliable and up-to-date.

Can anyone speak into this? Thanks in advance!

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