diff --git a/quienesquien/person.py b/quienesquien/person.py
index 2c95cf7..0bfde62 100644
--- a/quienesquien/person.py
+++ b/quienesquien/person.py
@@ -1,3 +1,5 @@
+import datetime as dt
+
 from pydantic import (
     BaseModel,
     ConfigDict,
@@ -27,12 +29,22 @@ class Person(BaseModel):
         extra='allow',
     )
 
-    @computed_field  # type: ignore[misc]
-    @property
+    @computed_field
     def peso1(self) -> str:
         # peso1 is required for backward compatibility with previous version.
         return str(self.coincidencia)
 
+    @property
+    def fecha_nacimiento_to_date(self) -> dt.date | None:
+        if not self.fecha_nacimiento:
+            return None
+        try:
+            return dt.datetime.strptime(
+                self.fecha_nacimiento, '%d/%m/%Y'
+            ).date()
+        except (TypeError, ValueError):
+            return None
+
     @model_validator(mode='after')
     def collect_extra_fields(self):
         if self.model_extra:
@@ -42,3 +54,11 @@ def collect_extra_fields(self):
             self.model_extra.clear()
             self.model_extra.update(lowercase_extra)
         return self
+
+    def matches_data(
+        self, date_of_birth: dt.date | None = None, curp: str | None = None
+    ) -> bool:
+        dob = self.fecha_nacimiento_to_date
+        match_dob = bool(dob and dob == date_of_birth)
+        match_curp = bool(self.curp and self.curp == curp)
+        return match_dob or match_curp
diff --git a/quienesquien/version.py b/quienesquien/version.py
index cd7ca49..a6221b3 100644
--- a/quienesquien/version.py
+++ b/quienesquien/version.py
@@ -1 +1 @@
-__version__ = '1.0.1'
+__version__ = '1.0.2'
diff --git a/tests/test_person.py b/tests/test_person.py
index 87e3b2d..d8ff2fd 100644
--- a/tests/test_person.py
+++ b/tests/test_person.py
@@ -1,8 +1,13 @@
+import datetime as dt
+from typing import Any
+
+import pytest
+
 from quienesquien.person import Person
 
 
-def test_collect_extra_fields():
-    person_data = {
+def test_collect_extra_fields() -> None:
+    person_data: dict[str, Any] = {
         'LISTA': 'lista1',
         'COINCIDENCIA': 100,
         'NOMBRECOMP': 'Juan Pérez',
@@ -14,5 +19,114 @@ def test_collect_extra_fields():
     assert person.peso1 == '100'
     assert person.coincidencia == 100
     assert person.nombrecomp == 'Juan Pérez'
-    assert person.campo_extra1 == 'valor1'
-    assert person.campo_extra2 == 'valor2'
+
+    # Access extra fields through model_extra after lowercase conversion
+    assert person.model_extra is not None
+    assert person.model_extra['campo_extra1'] == 'valor1'
+    assert person.model_extra['campo_extra2'] == 'valor2'
+
+
+@pytest.mark.parametrize(
+    'fecha_nacimiento_input, expected_date',
+    [
+        ('13/11/1953', dt.date(1953, 11, 13)),
+        (None, None),
+        ('', None),
+        ('invalid-date', None),
+        ('1953-11-13', None),
+        ('13/11', None),
+        ('13-11-1953', None),
+    ],
+)
+def test_fecha_nacimiento_date(
+    fecha_nacimiento_input: str | None,
+    expected_date: dt.date | None,
+) -> None:
+    person_data: dict[str, Any] = {
+        'LISTA': 'PPE',
+        'COINCIDENCIA': 100,
+        'NOMBRECOMP': 'Andres Manuel López Obrador',
+        'FECHA_NACIMIENTO': fecha_nacimiento_input,
+    }
+    person = Person(**person_data)
+
+    assert person.fecha_nacimiento == fecha_nacimiento_input
+    assert person.fecha_nacimiento_to_date == expected_date
+
+
+@pytest.mark.parametrize(
+    'p_nacimiento, p_curp, input_date, input_curp, expected_result',
+    [
+        # Different birth dates
+        ('13/11/1953', None, dt.date(1953, 11, 14), None, False),
+        # Same birth dates
+        ('13/11/1953', None, dt.date(1953, 11, 13), None, True),
+        # Different CURPs
+        (None, 'LOOA531113HDFPBR07', None, 'DIFFERENT_CURP_123', False),
+        # Same CURPs
+        (None, 'LOOA531113HDFPBR07', None, 'LOOA531113HDFPBR07', True),
+        # Different birth dates and same curp
+        (
+            '13/11/1953',
+            'LOOA531113HDFPBR07',
+            dt.date(1953, 11, 14),
+            'LOOA531113HDFPBR07',
+            True,
+        ),
+        # Same birth dates and different curp
+        (
+            '13/11/1953',
+            'LOOA531113HDFPBR07',
+            dt.date(1953, 11, 13),
+            'DIFFERENT_CURP_123',
+            True,
+        ),
+        # Both date and CURP different
+        (
+            '13/11/1953',
+            'LOOA531113HDFPBR07',
+            dt.date(1953, 11, 14),
+            'DIFFERENT_CURP_123',
+            False,
+        ),
+        # Both date and CURP same
+        (
+            '13/11/1953',
+            'LOOA531113HDFPBR07',
+            dt.date(1953, 11, 13),
+            'LOOA531113HDFPBR07',
+            True,
+        ),
+        # No data to compare
+        (None, None, None, None, False),
+        # Person has data but no input data
+        ('13/11/1953', None, None, None, False),
+        (None, 'LOOA531113HDFPBR07', None, None, False),
+        ('13/11/1953', 'LOOA531113HDFPBR07', None, None, False),
+        # Input data but person has no data
+        (None, None, dt.date(1953, 11, 13), 'LOOA531113HDFPBR07', False),
+    ],
+)
+def test_matches_data(
+    p_nacimiento: str | None,
+    p_curp: str | None,
+    input_date: dt.date | None,
+    input_curp: str | None,
+    expected_result: bool,
+) -> None:
+    person_data: dict[str, Any] = {
+        'LISTA': 'PPE',
+        'COINCIDENCIA': 90,
+        'NOMBRECOMP': 'Test Person',
+    }
+
+    if p_nacimiento is not None:
+        person_data['FECHA_NACIMIENTO'] = p_nacimiento
+
+    if p_curp is not None:
+        person_data['CURP'] = p_curp
+
+    person = Person(**person_data)
+
+    result = person.matches_data(date_of_birth=input_date, curp=input_curp)
+    assert result == expected_result