The Home Secretary said the estimated 3.3million EU nationals living in Britain, plus thousands of their close family, would be eligible for permanent 'settled status'.
The Home Office has developed a smart phone app that will ask them to prove their ID, whether they have criminal convictions and whether they live in the UK.=
Each application will be checked against Government databases and are supposed to be concluded in as little as two weeks.
Today's announcement confirms EU migrants will not undergo checks on whether they have committed crimes abroad.
The details were revealed after Mr Javid tore into the EU for failing to say how it will protect British expats.
He said the glaring lack of information for UK citizens living on the continent was 'not good enough'.Under the UK scheme, EU citizens who have lived continuously in the country for five years will be granted settled status, giving them the same rights to work, study and access benefits and services as they currently do.
The provisions would also apply to their close family members, such as spouses, children, parents and grandchildren.
Those living in the UK before December 31, 2020, but who had not met the residency criteria, would be granted pre-settled status until they meet the five-year test.Officials insist the arrangements, which will be phased in later this year and run until June 2021, will impose the least possible burden.
Obtaining settled status will cost £65 for adults and 32.50 for children - cheaper than a British passport at £75.50.
Applicants must prove their identity, residency in the UK and not be a serious criminal.
There will be help available to try to ensure they get a positive outcome.
There will be no charge for those who already hold a valid permanent residence or have indefinite leave to remain.
Some 1,500 staff will work on the project which will operate online or via smartphone app.
'We want to make it as easy as possible for EU citizens and their family members in the UK to secure their rights,' the Home Office said.
Britain and the EU are still wrangling over the future relationship after Brexit, with the possibility remaining that the UK could leave the bloc with no deal in place.
Mr Javid said Theresa May had made clear that whatever happened in Brexit talks EU citizens living lawfully in Britain would be allowed to stay.
By contrast it was unclear what the status of 900,000 British expats would be after any transition period ends, he said.
'Publishing details of how we will administer our settled status scheme shows we are honouring the commitments made towards EU citizens living in the UK,' he said.'But I am concerned that I have not seen any similar plans on how EU member states are going to support British nationals in their countries.
'This is not good enough and I hope both the European Parliament and Commission will exert more pressure for them to do this as soon as possible.'
Concerns have been mounting that EU leaders are using UK citizens as 'bargaining chips' in Brexit negotiations.
Earlier this week, Mr Javid met the European Parliament's Brexit co-ordinator Guy Verhofstadt, who admitted member states had not done enough to set out what the procedures will be for expat Britons living in the EU. Applicants will have to provide proof of identity and a recent photograph. Civil servants will approve applications unless there are exceptional reasons, such as criminal offending, which justified refusal.
Ministers have said that the application process, which will run until the end of June 2021, would be as straightforward as 'renewing a driving licence'.
EU citizens applying for settled status in the UK should receive a decision within two weeks of applying to the Home Office.
The Government has also previously confirmed the application fee will be no more than the cost charged to British citizens for a UK passport.
A standard adult passport currently costs £75.50 when the application is made online.
How will the new system for EU citizens work after Brexit?
EU citizens who have lived continuously in the UK for five years will be granted settled status, giving them the same rights to work, study and access benefits and services as they currently do.
Those living in the UK before December 31, 2020, but who had not met the residency criteria, will be granted pre-settled status until they meet the five-year test.
Close family members, such as spouses, children, parents and grandchildren will also be eligible.
Obtaining the status will cost £65 for adults and 32.50 for children - cheaper than a British passport at £75.50.
Applicants must prove their identity, residency in the UK and not be a serious criminal.
There will be help available to try to ensure they get a positive outcome.
There will be no charge for those who already hold a valid permanent residence or have indefinite leave to remain.
Some 1,500 staff will work on the project which will operate online or via smartphone app.
EU offer to UK citizens
Unconditional lifetime guarantee of rights for UK citizens who live in an EU country when Brexit happens. They can be joined by family members.
This includes access to residency, work, healthcare and benefits.
UK citizens living in Europe should not keep free movement rights, meaning they can only live and work in the country they are in on Brexit day.
The EU has supported the right of Britons to go home for up to two years without losing their rights in the EU they currently live in.
Brussels believes the cut off date for UK nationals living in the EU is Brexit day on March 29, 2019.
UK offer to EU citizens
EU citizens who have been living in Britain for five years can get 'settled status' for a one off £65 fee.
Those who move here before the end of transition on December 31, 2020, can stay to accrue five years.
Family members - including spouses, children and parents - can move to Britain to join the citizen already living here.
EU citizens who have settled status can leave the country for up to two years, but could lose it if they leave Britain for longer.
Those with settled status will be allowed to work, access the NHS and benefits.
