Statements of Stockholders' Equity (Unaudited) (Parenthetical)	3 Months Ended
Mar. 31, 2020 shares
Statement of Stockholders' Equity [Abstract]
Exercise of stock options, net of cashless exercise of shares	2,451

Exercise of stock options, net of cashless exercise of shares.

No definition available.

Name:	IDN_ExerciseOfStockOptionsNetOfCashlessExerciseShares
Namespace Prefix:	IDN_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration