diff --git a/validation_state.go b/validation_state.go
index 02fc610..63009e7 100644
--- a/validation_state.go
+++ b/validation_state.go
@@ -27,6 +27,10 @@ type ValidationState struct {
 	Misc                        map[string]interface{}
 
 	Errs *[]KeyError
+
+	// AdditionalValidationData is a shared storage between all substates of a ValidationState
+	// Its key space won't be cleared and is shared between all substates of a validation operation.
+	AdditionalValidationData *map[string]interface{}
 }
 
 // NewValidationState creates a new ValidationState with the provided location pointers and data instance
@@ -46,6 +50,7 @@ func NewValidationState(s *Schema) *ValidationState {
 		LocalEvaluatedPropertyNames: &map[string]bool{},
 		Misc:                        map[string]interface{}{},
 		Errs:                        &[]KeyError{},
+		AdditionalValidationData:    &map[string]interface{}{},
 	}
 }
 
@@ -66,9 +71,21 @@ func (vs *ValidationState) NewSubState() *ValidationState {
 		LocalEvaluatedPropertyNames: vs.LocalEvaluatedPropertyNames,
 		Misc:                        map[string]interface{}{},
 		Errs:                        vs.Errs,
+		AdditionalValidationData:    vs.AdditionalValidationData,
 	}
 }
 
+// GetAdditionalValidationData retrieves a key from the shared validation store(AdditionalValidationData).
+func (vs *ValidationState) GetAdditionalValidationData(key string) (interface{}, bool) {
+	data, exists := (*vs.AdditionalValidationData)[key]
+	return data, exists
+}
+
+// SetAdditionalValidationData stores data into the shared validation store(AdditionalValidationData)
+func (vs *ValidationState) SetAdditionalValidationData(key string, value interface{}) {
+	(*vs.AdditionalValidationData)[key] = value
+}
+
 // ClearState resets a schema to it's core elements
 func (vs *ValidationState) ClearState() {
 	vs.EvaluatedPropertyNames = &map[string]bool{}
diff --git a/validation_state_test.go b/validation_state_test.go
new file mode 100644
index 0000000..54e7755
--- /dev/null
+++ b/validation_state_test.go
@@ -0,0 +1,133 @@
+package jsonschema_test
+
+import (
+	"context"
+	"encoding/json"
+	"testing"
+
+	jptr "github.com/qri-io/jsonpointer"
+	"github.com/qri-io/jsonschema"
+)
+
+const GeoLockKeyword = "geolock"
+const GeoLockADKey = "geolockrefs"
+
+type GeoLock struct {
+	Scope string
+	Zone  string
+}
+
+type GeoLockRef struct {
+	DataPath string
+	Scope    string
+	Zone     string
+	Value    string
+}
+
+func NewGeoLock() jsonschema.Keyword {
+	return &GeoLock{}
+}
+
+func (f *GeoLock) Validate(propPath string, data interface{}, errs *[]jsonschema.KeyError) {}
+
+func (f *GeoLock) Register(uri string, registry *jsonschema.SchemaRegistry) {}
+
+func (f *GeoLock) Resolve(pointer jptr.Pointer, uri string) *jsonschema.Schema {
+	return nil
+}
+
+func (f *GeoLock) ValidateKeyword(ctx context.Context, currentState *jsonschema.ValidationState, data interface{}) {
+	glKeyword := currentState.Local.JSONProp("geolock").(*GeoLock)
+
+	var refs []GeoLockRef
+	if tmp, found := currentState.GetAdditionalValidationData(GeoLockADKey); found {
+		refs = tmp.([]GeoLockRef)
+	} else {
+		refs = []GeoLockRef{}
+	}
+
+	ref := GeoLockRef{
+		DataPath: currentState.InstanceLocation.String(),
+		Scope:    glKeyword.Scope,
+		Zone:     glKeyword.Zone,
+		Value:    data.(string),
+	}
+
+	refs = append(refs, ref)
+
+	currentState.SetAdditionalValidationData(GeoLockADKey, refs)
+}
+
+func TestAdditionalValidationData(t *testing.T) {
+
+	ctx := context.Background()
+	var schemaData = []byte(`{
+		"$defs": {
+			"person": {
+				"type": "object",
+				"properties": {
+					"firstName": {
+						"type": "string"
+					},
+					"lastName": {
+						"type": "string"
+					},
+					"address_city": {
+						"type": "string",
+						"geolock": {
+							"zone": "Europe",
+							"scope": "city"
+						}
+					}
+				}
+			}
+		},
+		"type": "array",
+		"items": {
+			"$ref": "#/$defs/person"
+		}
+	}`)
+
+	jsonschema.RegisterKeyword(GeoLockKeyword, NewGeoLock)
+	jsonschema.LoadDraft2019_09()
+
+	rs := &jsonschema.Schema{}
+	if err := rs.UnmarshalJSON(schemaData); err != nil {
+		t.Errorf("failure to unmarshal schema: %s", err.Error())
+		t.FailNow()
+		return
+	}
+
+	expectedCount := 3
+	var valid = []byte(`[
+		{ "firstName" : "Antonio", "lastName" : "Alves", "address_city": "pt#lisbon" },
+		{ "firstName" : "Peter", "lastName" : "Parque", "address_city": "de#berlin" },
+		{ "firstName" : "Juan", "lastName" : "Juniper", "address_city": "es#madrid" }
+	]`)
+	var doc interface{}
+	if err := json.Unmarshal(valid, &doc); err != nil {
+		t.Errorf("failure to unmarshal test data: %s", err.Error())
+		t.FailNow()
+		return
+	}
+	vs := rs.Validate(ctx, doc)
+	if vs.Errs != nil && len(*vs.Errs) > 0 {
+		t.Errorf("failure to validate test data: %v", vs.Errs)
+		t.FailNow()
+		return
+	}
+
+	tmp, refExists := vs.GetAdditionalValidationData(GeoLockADKey)
+	if !refExists {
+		t.Errorf("Expected to find key %q validation state additional data.", GeoLockADKey)
+		t.FailNow()
+		return
+	}
+	foundLocks := tmp.([]GeoLockRef)
+
+	if len(foundLocks) != expectedCount {
+		t.Errorf("Unexpected number of refs found. expected=%d, found=%d", expectedCount, len(foundLocks))
+		t.FailNow()
+		return
+	}
+}