An apparatus of one embodiment evaluates standards compliance during software development. The method includes a base station adaptively determining a signal quality threshold. Further aspects of the invention provide real-time access to cash receipts for enterprise use in making financial and planning decisions. Converted optical signals propagate along the waveguide, and can be directed to an optical detector. Additional embodiments include output diode and MOS transistor designs that use field plates for creating potential barriers that separate these devices from the n type doped field regions.