The system will become available in Japan on September 3, 2009, at a RRP of 29, 980 yen (including tax).

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Another criticism of RRP is that it uses passwords to identify registrars instead of the more secure method of certificates.

CNN: Is domain name system vulnerable to slamming?

Wesson agrees that RRP does not prevent slamming, but he says registrars will have little economic incentive to switch customers without authorization.

CNN: Is domain name system vulnerable to slamming?

Internet engineers also complain that RRP uses the Secure Sockets Layer protocol, which doesn't provide an audit trail for resolving domain-name disputes.

CNN: Is domain name system vulnerable to slamming?

"Digital certificates are required for connection to the RRP service, but user ID and passwords are required to initiate a session, " explains Rick Wesson, an IETF member and a senior software engineer at Alice's Registry Tools.

CNN: Is domain name system vulnerable to slamming?