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Note 13 - Concentrations | 12 Months Ended
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Jun. 30, 2017
Notes to Financial Statements |
Concentration Risk Disclosure [Text Block] | NOTE 1 3 - CONCENTRATIONS Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of temporary cash investments and unsecured trade accounts receivable. The Company maintains cash balances at a financial institution in San Diego, California. Our cash balance at this institution is secured by the Federal Deposit Insurance Corporation up to $250,000. As of June 30, 2017, cash totaled approximately $121,000, which consists of funds held in a non-interest bearing bank deposit account. The Company has not experienced any losses in such accounts. Management believes that the Company is not exposed to any significant credit risk with respect to its cash. Customer Concentrations During the year ended June 30, 2017, we had three major customers that each represented more than 10% of our revenues on an individual basis, or approximately $524,000 or 58% of our total revenues. Dur ing the year ended June 30, 2016, we had three major customers that each represented more than 10% of our revenues on an individual basis, or approximately $285,000 or 51% of our total revenues. Suppliers/Vendor Concentrations We obtain a limited number of components and supplies included in our products from a small group of suppliers. Dur ing the year ended June 30, 2017 we had three suppliers who accounted for more than 10% of our total purchases, on an individual basis. Purchases for these three suppliers totaled $1,665,000 or 57% of our total purchases. Dur ing the year ended June 30, 2016 we had three suppliers who accounted for more than 10% of our total purchases, on an individual basis. Purchases for these three suppliers totaled $793,000 or 66% of our total purchases.

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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI http://asc.fasb.org/topic&trid=2134479 + Details
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