XBRL for business. Consider the following from Business Intelligence Blog...Everyone of us know that barcode shows data about the object to which it attaches. This optical machine-readable representation of data, has done wonders for various industry verticals right from production distribution, supply chain, retail, healthcare, etc. right from 1974 when the very first scanning of the now ubiquitous Universal Product Code (UPC) barcode was on a pack of Wrigley Company chewing gum.

XBRL (eXtensible Business Reporting Language) is all set to do similar wonders for business reporting. In Business Reporting Supply Chain, collaboration of data is the key whether its business operations, internal or external financial reporting and regulatory reporting. XBRL is a open global standard, freely available for exchanging business information....XBRL is all set to revolutionize business reporting through electronic communication of business and financial data.

Soon via the use of mobile apps your ebill will contain only the code which will allow the content to be secured at source.

source: http://blog.maia-intelligence.com/2011/05/09/xbrl-a-barcode-for-business-reporting/