|I would use a lookup feature with the function for today's date as the lookup. Insert the function for the date into a cell and use the cell as a reference in the lookup.|
A1 = today()
Use the lookup function with the reference to A1 to look on A and display column B ...
Just to explain a bit more - use the date from A1 to look in all of column A (on the identification worksheet) and place the data from column B in that same worksheet in the cell of the summary worksheet.
I'm still learning everyday.