2. Basis of Presentation and Significant Accounting Policies: Revenue Recognition Policy: Disaggregation of Revenue (Tables)

6 Months Ended

Apr. 30, 2022

Customer

Disaggregation of Revenue

Revenue by type of customer:	Three Months Ended April 30, 2022	Three Months Ended April 30, 2021	Six Months Ended April 30, 2022	Six Months Ended April 30, 2021
Airlines	$170,000	$149,000	$512,000	$511,000
Airports	937,000	1,216,000	1,915,000	2,480,000
Other	238,000	97,000	430,000	169,000
Total Revenue	$1,345,000	$1,462,000	$2,857,000	$3,160,000

Performance Obligation

Disaggregation of Revenue

Revenue by type of performance obligation:	Three Months Ended April 30, 2022	Three Months Ended April 30, 2021	Six Months Ended April 30, 2022	Six Months Ended April 30, 2021
Subscription services	$1,273,000	$1,341,000	$2,732,000	$2,939,000
Professional services	72,000	121,000	125,000	221,000
Total Revenue	$1,345,000	$1,462,000	$2,857,000	$3,160,000