Yes it is possible to print barcode for fixed asset.
For bar code reader, coordinate with basis to set up for capturing the reader with SAP data.
check the below links -
http://help.sap.com/saphelp_46c/helpdata/en/4f/71eac9448011d189f00000e81ddfac/content.htm
Check the t-code S_ALR_87010137 and read the SAP information on the t-code to know how to customize the SAPscript form.
Regards,
Sridevi