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If 25% of online transaction will require consumer and payment authentication then the real question one must ask how many of them will result in cart abandonment for any of the following reasons:

1. False Rejection

2. Too lengthy authentication process.

In addition- the problem of scaling up from benchmark trials to All-European deployment is far from being trivial. For example:

1. Luke Olbrich, the head of core payments for PayPal Europe, said he had seen the pitfalls of overly intricate or burdensome authentication controls when attempting to introduce a new security protocol, 3D Secure, in 2015. During trials, average authentication failure rates across Europe reached around 60% — the normal figure, he said, would be around 5 % :“I finally said pull the plug, we have to stop this,” .

2.facial recognition with 98 percent false positive rate:
https://www.theverge.com/2018/7/5/17535814/uk-face-recognition-police-london-accuracy-completely-comfortable

1. Central Bank issued crypto-currency must be trace-able (otherwise it contradicts AML/KYC). Permisionless Blockchain does not provide the nessesary infrastructure for this purpose.

2. Insecurity of Blockchain wallets is notorious. 

Nevertheless - both problems can be resolved with proper technology.

Perhaps a "silver bullet" after all:

https://youtu.be/FoniTTIEy5s

"One of the most interesting implications of PSD2 for merchants (as touched upon earlier) is how it enables them to challenge banks and in effect bypass that step of the authentication process completely."

Question: The merchants will assume the fraud liability ? I don't see this coming... 

Hacking the Samsung Galaxy S8 Iris scanner : 

https://media.ccc.de/v/biometrie-s8-iris-en 

The article shows the mechanism how credit-card data can end-up in the black market. This is not the only way - see all the breaches worldwide. The end of the story - one can buy these data for $5 :

http://www.networkworld.com/article/2995427/malware-cybercrime/how-much-is-your-stolen-personal-data-worth.html

All those in favour of believing that "few numbers in the cloud" are being save - are a little bit naive.

General public is probably less naive than we think ( 62% are afraid of buying online). 

@ Anonymous Finextra Member 

1. The trend is clear : https://www.bloomberg.com/news/articles/2016-11-25/black-friday-s-slow-death-drags-on-as-shoppers-migrate-online

2. Sentrycs Mobile is NOT a one-size-fits-all solution. 

3. E-Merchant does not nessesarily need a smartphone app. Web/browser integration is also possible.

4.  "A 'fee per transaction' = just another snout in the trough."- Are you referring to the payment network in general ???

I , respectfully, disagree .My key point: strong customer and payment authentication must be in-merchant-app. You are welcome to see my presentation , quoting these objections: http://www.slideshare.net/talmor/sentrycs-mobile-for-payments-more-security-and-less-friction

I , respectfully, disagree with VISA .My key point: strong customer and payment authentication must be in-merchant-app. You are welcome to see my presentation , quoting VISA objections : http://www.slideshare.net/talmor/sentrycs-mobile-for-payments-more-security-and-less-friction