Easy Profile - Joomla Extension

Hi,
if the various data not are visible on profile you can use the hidden field type.
if the various data are visible on profile you can use the text field type with some javascript to add readonly attributes to field*** (we can help you do).
but not is a good solution for security (an user can modify the values with some knowledge of html).

in a few days I will release an update with some new feature for the field "text". I can confirm that also add the readonly parameter. Thanks for your suggestion

*** for now, i advise you to use this solution, then in a few days with the new version you can set a true readonly.

There are also other possibilities, but require a minimum of knowledge of php.
example:
add this to file /administrator/components/com_jsn/helpers/fields/text.php at the end of line 50 (about)

'.($item->alias=="fieldalias" ? ' readonly="true"' : '').'

replace field alias with alias of filed that you want readonly