Although you can use bar code fonts to add PostNET bar codes to an
Access report, PostNET bar codes require a start code, a stop code and
a check digit that must be calculated and appended to the data that
you are encoding in the bar code. This means that you will need to
write some code using VBA in Access to modify the data before you
apply the font - otherwise you will end up with bar codes that will
not read. Also, fonts generally produce very poor quality bar codes.
If you want the easiest solution that does not require that you write
any code in Access, then a bar code ActiveX control will do the job
much better and much easier. You will also get much higher quality bar
codes.
The best bar code ActiveX control on the market is from TAL
Technologies and you can download a fully functional demo version at
the following web page:
http://www.taltech.com/products/activex_barcodes.html
The demo version of the above ActiveX control comes with a sample
Access database that contains reports that demonstrate how to use the
control in an Access report. It is very easy and you should be up and
running in a few minutes.