Consolidated Balance Sheets (USD $)	Sep. 30, 2011	Dec. 31, 2010
Assets
Cash and cash equivalents	$ 2,715,548	$ 6,957,544
Short term investments	2,000,000	0
Royalty receivables, net of reserves of $92,723 and $162,723	154,955	380,177
Prepaid expenses and other current assets	124,456	118,099
Note receivable SPD Control Systems	150,000	0
Total current assets	5,144,959	7,455,820
Fixed assets, net	88,897	109,768
Note receivable SPD Control Systems	0	150,000
Deposits and other assets	22,605	69,103
Total assets	5,256,461	7,784,691
Liabilities and Shareholders' Equity
Accounts payable	141,906	51,938
Deferred revenue	89,841	25,000
Accrued expenses and other	100,701	235,301
Total liabilities	332,448	312,239
Commitments and Contingencies
Shareholders' equity:
Capital stock, par value $0.0001 per share; authorized 100,000,000 shares, issued and outstanding 18,544,355 and 18,281,973 shares, respectively	1,854	1,828
Additional paid-in capital	88,506,620	87,744,842
Accumulated deficit	(83,584,461)	(80,274,218)
Total shareholders' equity	4,924,013	7,472,452
Total liabilities and shareholders' equity	$ 5,256,461	$ 7,784,691

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Also includes aggregate carrying amount, as of the balance sheet date, of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed in the balance sheet. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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