5. STOCK-BASED COMPENSATION (Details - Options by exercise price) - $ / shares	6 Months Ended
	Dec. 31, 2020	Jun. 30, 2020
Option 1 [Member]
Range of exercise prices	0.27
Number of shares outstanding	40,000
Weighted average contractual life	6 months 10 days
Weighted average exercise price	$ 0.27
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	5 years 2 months 27 days
Weighted average exercise price	$ 0.48
Exercisable number of shares	60,000
Exercisable weighted average exercise price	$ 0.48
Option 3 [Member]
Range of exercise prices	0.50
Number of shares outstanding	100,000
Weighted average contractual life	4 years 5 months 20 days
Weighted average exercise price	$ 0.50
Exercisable number of shares	100,000
Exercisable weighted average exercise price	$ 0.50
Option 4 [Member]
Range of exercise prices	0.55
Number of shares outstanding	44,000
Weighted average contractual life	3 years 2 months 12 days
Weighted average exercise price	$ 0.55
Exercisable number of shares	44,000
Exercisable weighted average exercise price	$ 0.55
Option 5 [Member]
Range of exercise prices	0.70
Number of shares outstanding	100,000
Weighted average contractual life	7 years 7 months 2 days
Weighted average exercise price	$ 0.7
Exercisable number of shares	100,000
Exercisable weighted average exercise price	$ 0.70
Option 6 [Member]
Range of exercise prices	0.73
Number of shares outstanding	786,000
Weighted average contractual life	5 years 9 months 22 days
Weighted average exercise price	$ 0.73
Exercisable number of shares	786,000
Exercisable weighted average exercise price	$ 0.73
Option 7 [Member]
Range of exercise prices	0.85
Number of shares outstanding	6,000
Weighted average contractual life	2 years 4 days
Weighted average exercise price	$ 0.85
Exercisable number of shares	6,000
Exercisable weighted average exercise price	$ 0.85
Option 8 [Member]
Range of exercise prices	0.90
Number of shares outstanding	36,000
Weighted average contractual life	3 years 5 months 9 days
Weighted average exercise price	$ 0.90
Exercisable number of shares	36,000
Exercisable weighted average exercise price	$ 0.90
Option 9 [Member]
Range of exercise prices	1.20
Number of shares outstanding	200,200
Weighted average contractual life	1 year 2 months 1 day
Weighted average exercise price	$ 1.20
Exercisable number of shares	200,200
Exercisable weighted average exercise price	$ 1.20
Option 10 [Member]
Range of exercise prices	1.25
Number of shares outstanding	45,000
Weighted average contractual life	9 years 2 months 19 days
Weighted average exercise price	$ 1.25
Exercisable number of shares	0
Exercisable weighted average exercise price
Option 11 [Member]
Range of exercise prices	1.30
Number of shares outstanding	478,000
Weighted average contractual life	8 years 4 months 17 days
Weighted average exercise price	$ 1.30
Exercisable number of shares	160,679
Exercisable weighted average exercise price	$ 1.30
Option 12 [Member]
Range of exercise prices	1.40
Number of shares outstanding	70,000
Weighted average contractual life	9 years 10 months 17 days
Weighted average exercise price	$ 1.40
Exercisable number of shares	70,000
Exercisable weighted average exercise price	$ 1.40
Option 13 [Member]
Range of exercise prices	1.42
Number of shares outstanding	100,000
Weighted average contractual life	8 years 8 months 12 days
Weighted average exercise price	$ 1.42
Exercisable number of shares	33,334
Exercisable weighted average exercise price	$ 1.42
Option 14 [Member]
Range of exercise prices	1.50
Number of shares outstanding	70,000
Weighted average contractual life	9 years 11 months 8 days
Weighted average exercise price	$ 1.50
Exercisable number of shares	70,000
Exercisable weighted average exercise price	$ 1.50
Stock Options [Member]
Range of exercise prices	0.27–1.50
Number of shares outstanding	2,135,200	2,065,200
Weighted average contractual life	6 years 2 months 16 days
Weighted average exercise price	$ 0.96	$ 0.95
Exercisable number of shares	1,706,213
Exercisable weighted average exercise price	$ 0.88