Can be Easyjet Plus card used for FastTrack even when you are flying with another airline?

I have an Easyjet Plus card, which among the other benefits, grants access to FastTrack security checks.
Can this be used even when you are flying with another airline?
Best Answer
According to EasyJet Plus' website, it seems that the EasyJet Plus card itself does not grant you access to Fast Track security, instead it is a valid EasyJet Plus card membership number added to your booking that grants you access:
Fast Track will be added to your boarding pass if the airport you are flying from is part of the programme. You must add a valid easyJet Plus card membership number to your booking which will automatically display the Fast Track symbol on your boarding pass.
[...]
Once you are at the airport Follow the signs to Fast Track security and show the security agent your boarding pass to enter. If the Fast Track security gate is an automated system, you can scan your boarding pass barcode to enter. Please note that you cannot use your easyJet Plus card for Fast Track entry.
(Emphasis mine)
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Does easyJet Speedy boarding include fast track?
With easyJet Plus, for an annual fee you can benefit from our dedicated easyJet Plus Bag drop, Speedy boarding, inclusive allocated seating and Fast Track security, as well as get access to a range of exclusive benefits.Is easyJet plus the same as speedy boarding?
If you are a member of easyJet Plus, you will automatically receive Speedy Boarding on all flights that your Plus number is attached to. Otherwise, the only way for a passenger to get Speedy Boarding is to purchase a seat assignment in one of the seat categories that qualifies (either Up Front or Extra Legroom).How does easyJet Speedy boarding work?
Customers who have requested Special Assistance in advance and are present at the gate will be boarded first. We then board in the following priority order: Speedy boarding customers. Families with children under 5.How do I use my easyJet Plus Card?
card holders must use easyJet Plus Speedy Boarding to board first in order to secure the space for their bag. their card at the boarding gate. If they recently renewed and their membership card has not been delivered, please ask the customer to bring a print out of their confirmation email on their trip.EasyJet Plus Membership Explained
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