A Small Inconvenience

My library card broke in half last week.  The thing snapped clean in two.  I nearly cried and felt as though I'd lost my left arm.  

This week I went to the library and asked for a replacement.  It was no problem but I am now facing an unexpected dilemma.  Along with the new card I received a new identification number.  A new number!  I liked my old number, thank you very much.  It was conveniently memorized and I could log on to the library system at a moment's notice.  That number was an old buddy.  A familiar friend. 

I don't believe my fuzzy old brain can remember some fancy new number.  Hmmmmph.