Statements of Stockholders' Equity (Unaudited) (Parenthetical)	6 Months Ended
Jun. 30, 2021 shares
Statement of Stockholders' Equity [Abstract]
Exercise of stock options, net of cashless exercise of shares	58,122
Exercise of stock options net of shares with held	92,634

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