WebLogic 12.1.2 zip install: terminalio to read the password securely is not found

My WebLogic 12.1.2 install from the zip distribution aborted after asking for the domain admin user with the error message:

Native Library(terminalio) to read the password securely from commandline is not found

It appears that this is a different symptom of the same error I had working with Weblogic 12.1.1: the native libraries delivered with WebLogic are not in the PATH. My system is a 64 bit windows system, so i need to add the libraries for this platform to avoid this error.
I added one line to %WL_HOME%\wlserver\server\bin\setWLSEnv.cmd

set WL_HOME=C:\wl12120
@REM added the next line
set PATH=%WL_HOME%\server\native\win\x64;%PATH%

If you do this, the installation and the configuration of a default domain run smoothly. As explained in my previous post, after the domain creation, also add this line to the domain envionment setup file %domain_dir\bin\setDomainEnv.cmd. If you don't you'll get warnings about Weblogic reverting to less efficient file reading libraries etc.