CONDENSED BALANCE SHEETS (USD $)	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 5,713,977	$ 7,542,281
Accounts receivable from related party	57,167	534,703
Trade accounts receivable	17,314	8,817
Inventory	207,768	190,424
Prepaid expenses	683,523	676,358
Total current assets	6,679,749	8,952,583
Fixed assets, net	848,252	844,606
Intangible assets, net	266,340	289,865
Other assets	38,001	38,001
Total assets	7,832,342	10,125,055
Current liabilities:
Accounts payable	373,156	835,439
Accrued expenses	224,705	252,953
Deferred revenue	3,513,668	3,783,441
Total current liabilities	4,111,529	4,871,833
Commitments and contingencies (Note 6)
Stockholders’ equity:
Common stock, $0.001 par value — 300,000,000 shares authorized; 122,481,674 and 122,448,707 shares issued and outstanding at March 31, 2014 and December 31, 2013, respectively	122,482	122,449
Additional paid-in capital	120,017,448	119,885,371
Accumulated deficit	(116,419,117)	(114,754,598)
Total stockholders’ equity	3,720,813	5,253,222
Total liabilities and stockholders’ equity	$ 7,832,342	$ 10,125,055