3.SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

Our financial statements are prepared in accordance with generally accepted accounting principles. Certain reclassifications have been made to prior period amounts to conform to the current period presentation.

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. The more significant estimates made by us include the volatility, forfeiture rate and estimated lives of share-based awards used in the estimate of the fair market value of share-based compensation, the assessment of recoverability of long-lived assets, the amortization periods for intangible and long-lived assets, and the valuation allowance for deferred taxes. Actual results could differ from the estimates made. We periodically evaluate estimates used in the preparation of the financial statements for continued reasonableness. Appropriate adjustments, if any, to the estimates used are made prospectively based upon such periodic evaluation.

Cash and Cash Equivalents

We consider cash and cash equivalents to include cash on hand, interest-bearing deposits, overnight repurchase agreements and investments with original maturities of three months or less when purchased.

Available-for-Sale Securities

Available-for-sale securities are intended to be held for indefinite periods of time and are not intended to be held to maturity. These securities are recorded at fair value and any unrealized holding gains and losses, net of the related tax effect, are excluded from earnings and are reported as a separate component of accumulated other comprehensive loss until realized. The tax effect of our unrealized holding gains and losses is zero for each of the years ended December 31, 2014, 2013, and 2012 due to the existence of a full valuation allowance. Our available-for-sale securities at December 31, 2014 and 2013 consisted of mutual funds that invest primarily in short-term municipal securities with an average effective maturity of one year or less. All dividends and realized gains are recognized as other income as earned and immediately reinvested. The Company has determined that the fair value of its available for sale securities fall within Level 1 in the fair value hierarchy (See Note 14).

Inventory

Inventory is stated at the lower of standard cost or estimated net realizable value. Standard cost approximates actual cost as determined under the first-in, first-out method. We review our inventory for estimated obsolescence or unmarketable inventory and write down inventory for the difference between cost and estimated market value based upon assumptions about future demand. Future demand is affected by market conditions, technological obsolescence, new products and strategic plans, each of which is subject to change.

Property and Equipment

Property and equipment are stated at cost, less accumulated depreciation. Depreciation is determined using the straight-line method over the following estimated useful lives:



Manufacturing and office equipment	5-7 years
Tooling	3 years
Leasehold improvements	Remaining life of lease
Furniture and fixtures	7 years
Computer equipment and software	3-5 years

The cost and accumulated depreciation of assets sold or retired are removed from their respective accounts, and any resulting net gain or loss is recognized in the accompanying statements of comprehensive loss. The carrying value of long-lived assets is reviewed on a regular basis for the existence of facts, both internally and externally, that may suggest impairment. Recoverability of assets to be held and used is measured by comparing the carrying amount of an asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of the assets exceeds its estimated undiscounted future net cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the assets.

Long-lived assets to be sold are classified as held for sale in the period in which there is an approved plan for sale of the assets within one year, and it is unlikely that the plan will be withdrawn or changed. Long-lived assets held for sale are recorded at the lower of their carrying amount or fair value less estimated costs to sell.

Intangible Assets

Patents, copyrights and other intangible assets are amortized using the straight-line method over their estimated period of benefit. We estimate the economic lives of our patents and copyrights to be fifteen to twenty years. We estimate the economic lives of other intangible assets, including licenses, based on estimated technological obsolescence, to be two to five years, which is generally shorter than the contractual lives. Management evaluates the recoverability of intangible assets periodically and takes into account events or circumstances that may warrant revised estimates of useful lives or that may indicate impairment exists.

Accounting for Share-Based Compensation

We have various share-based compensation programs which provide for equity awards including stock options, restricted stock units (“RSUs”) and restricted stock awards (“RSAs”). We calculate the fair value of employee share-based equity awards on the date of grant and recognize the calculated fair value, net of estimated forfeitures, as compensation expense over the requisite service periods of the related awards. We estimate the fair value of each equity award using the Black-Scholes option valuation model or the Monte Carlo simulation fair value model for awards that contain market conditions. These valuation models require the use of highly subjective assumptions and estimates including (i) how long employees will retain their stock options before exercising them, (ii) the volatility of our common stock price over the expected life of the equity award, and (iii) the rate at which equity awards will ultimately be forfeited by the recipients. Such estimates, and the basis for our conclusions regarding such estimates, are outlined in detail in Note 8. Estimates of fair value are not intended to predict actual future events or the value ultimately realized by persons who receive equity awards.

Revenue Recognition

We did not recognize revenue in 2014, 2013, or 2012. We recognize revenue when there is persuasive evidence of an arrangement, the amounts are fixed and determinable, and the collectibility of the resulting receivable is reasonably assured.

Research and Development Expenses

Research and development costs are expensed as incurred and include salaries and benefits, costs paid to third party contractors, prototype expenses, maintenance costs for software development tools, depreciation, amortization, and an allocated portion of facilities costs.

Loss per Common Share

Basic loss per common share is determined based on the weighted-average number of common shares outstanding during each year. Diluted loss per common share is the same as basic loss per common share as all potential common shares are excluded from the calculation, as their effect is anti-dilutive.

Options and warrants to purchase 7,696,201, 8,888,727, and 10,482,608 shares of common stock were outstanding at December 31, 2014, 2013, and 2012, respectively. In addition, unvested RSUs representing 2,184,151, 1,882,384, and 1,433,842 shares of common stock were outstanding at December 31, 2014, 2013, and 2012, respectively. These options, warrants and RSUs were excluded from the computation of diluted loss per share as their effect would have been anti-dilutive.

Leases

Our facilities are leased under operating leases. For those leases that contain rent escalations or rent concessions, we record the total rent payable during the lease term on a straight-line basis over the term of the lease with the difference between the rents paid and the straight-line rent recorded as a deferred rent liability in the accompanying balance sheets.

Income Taxes

The provision for income taxes is based on loss before taxes as reported in the accompanying statements of comprehensive loss. Deferred tax assets and liabilities are recognized for the expected future tax consequences of events that have been included in the financial statements or tax returns. Deferred tax assets and liabilities are determined based on differences between the financial statement carrying amounts and the tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. Valuation allowances are established to reduce deferred tax assets when, based on available objective evidence, it is more likely than not that the benefit of such assets will not be realized. Our deferred tax assets exclude unrecognized tax benefits which do not meet a more-likely-than-not threshold for financial statement recognition for tax positions taken or expected to be taken in a tax return.

We utilize the short-cut method for establishing the historical pool of windfall tax benefits related to employee share-based compensation. We do not recognize deferred tax assets with regard to the excess of tax over book stock compensation until the tax deductions actually reduce current taxes payable at which time the tax benefit would be recorded as an increase in additional paid-in-capital.

Recent Accounting Pronouncements

On January 1, 2014, we adopted Accounting Standards Update 2013-11 Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists (“ASU 2013-11”). ASU 2013-11 provides guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists thereby reducing diversity in practice.

In August 2014, the Financial Accounting Standards Board issued Accounting Standards Update 2014-15, “Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern,” (“ASU 2014-15”) to provide guidance on management’s responsibility in evaluating whether there is substantial doubt about a company’s ability to continue as a going concern and to provide related footnote disclosures. ASU 2014-15 is effective for interim and annual periods beginning after December 15, 2016 and earlier adoption is permitted. We are currently assessing the impact of this update on future discussions of our liquidity position in our financial statements and have not early adopted ASU 2014-15.