4. STOCK-BASED COMPENSATION (Details - Options by exercise price) - $ / shares	9 Months Ended
	Mar. 31, 2017	Jun. 30, 2016
Stock Options [Member]
Range of exercise prices	$0.27-$7.75
Number of shares outstanding	1,131,400	1,136,000
Weighted average contractual life	7 years 3 months
Weighted average exercise price	$ .78	$ .79
Exercisable number of shares	866,400
Exercisable weighted average exercise price	$ .82
Option 1 [Member]
Range of exercise prices	0.27
Number of shares outstanding	40,000
Weighted average contractual life	4 years 6 months 15 days
Weighted average exercise price	$ .27
Exercisable number of shares	40,000
Exercisable weighted average exercise price	$ 0.27
Option 2 [Member]
Range of exercise prices	0.48
Number of shares outstanding	60,000
Weighted average contractual life	9 years
Weighted average exercise price	$ .48
Exercisable number of shares	40,000
Exercisable weighted average exercise price	$ 0.48
Option 3 [Member]
Range of exercise prices	0.50
Number of shares outstanding	80,000
Weighted average contractual life	9 years 2 months 23 days
Weighted average exercise price	$ .50
Exercisable number of shares	35,000
Exercisable weighted average exercise price	$ 0.50
Option 4 [Member]
Range of exercise prices	0.50
Number of shares outstanding	20,000
Weighted average contractual life	4 years 2 months 19 days
Weighted average exercise price	$ .50
Exercisable number of shares	20,000
Exercisable weighted average exercise price	$ .50
Option 5 [Member]
Range of exercise prices	0.55
Number of shares outstanding	37,000
Weighted average contractual life	4 years 10 months 13 days
Weighted average exercise price	$ .55
Exercisable number of shares	37,000
Exercisable weighted average exercise price	$ .55
Option 6 [Member]
Range of exercise prices	0.73
Number of shares outstanding	600,000
Weighted average contractual life	8 years 1 month 17 days
Weighted average exercise price	$ .73
Exercisable number of shares	400,000
Exercisable weighted average exercise price	$ .73
Option 7 [Member]
Range of exercise prices	0.85
Number of shares outstanding	9,000
Weighted average contractual life	5 years 9 months 4 days
Weighted average exercise price	$ .85
Exercisable number of shares	9,000
Exercisable weighted average exercise price	$ .85
Option 8 [Member]
Range of exercise prices	0.90
Number of shares outstanding	9,000
Weighted average contractual life	6 years 9 months 4 days
Weighted average exercise price	$ .90
Exercisable number of shares	9,000
Exercisable weighted average exercise price	$ .90
Option 9 [Member]
Range of exercise prices	0.95
Number of shares outstanding	65,000
Weighted average contractual life	7 years 3 months 11 days
Weighted average exercise price	$ .95
Exercisable number of shares	65,000
Exercisable weighted average exercise price	$ .95
Option 10 [Member]
Range of exercise prices	1.20
Number of shares outstanding	207,800
Weighted average contractual life	4 years 11 months 1 day
Weighted average exercise price	$ 1.20
Exercisable number of shares	207,800
Exercisable weighted average exercise price	$ 1.20
Option 11 [Member]
Range of exercise prices	1.25
Number of shares outstanding	1,200
Weighted average contractual life	1 year 7 months 24 days
Weighted average exercise price	$ 1.25
Exercisable number of shares	1,200
Exercisable weighted average exercise price	$ 1.25
Option 12 [Member]
Range of exercise prices	1.35
Number of shares outstanding	1,200
Weighted average contractual life	2 years 7 months 24 days
Weighted average exercise price	$ 1.35
Exercisable number of shares	1,200
Exercisable weighted average exercise price	$ 1.35
Option 13 [Member]
Range of exercise prices	7.75
Number of shares outstanding	1,200
Weighted average contractual life	7 months 28 days
Weighted average exercise price	$ 7.75
Exercisable number of shares	1,200
Exercisable weighted average exercise price	$ 7.75