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

6 Months Ended

Apr. 30, 2021

Customer

Disaggregation of Revenue

Revenue by type of customer:	Three Months Ended April 30, 2021	Three Months Ended April 30, 2020	Six Months Ended April 30, 2021	Six Months Ended April 30, 2020
Airlines	$          149,000	$       1,676,000	$          511,000	$       4,294,000
Airports	1,216,000	1,463,000	2,480,000	2,854,000
Other	97,000	40,000	169,000	256,000
Total Revenue	$       1,462,000	$       3,179,000	$       3,160,000	$       7,404,000

Performance Obligation

Disaggregation of Revenue

Revenue by type of performance obligation:	Three Months Ended April 30, 2021	Three Months Ended April 30, 2020	Six Months Ended April 30, 2021	Six Months Ended April 30, 2020
Subscription services	$       1,341,000	$       3,077,000	$       2,939,000	$       7,034,000
Professional services	121,000	102,000	221,000	370,000
Total Revenue	$       1,462,000	$       3,179,000	$       3,160,000	$       7,404,000