Just put a screen protector on which has a raised dot over the 5.
Then it will be just like any other POS keypad.
In Australia we've been using PIN's for twenty or more years, it's about time the US caught up.
Except the majority of Android phones sold have small screens and are cheap, this can easily be seen by the pitiful amounts of money Android vendors make and the absence of high end large screened phones using the web. The vast majority of Android users don't have 5" phones.