diff --git a/android/app/src/main/java/com/epfl/dedis/hbt/data/document/Portrait.kt b/android/app/src/main/java/com/epfl/dedis/hbt/data/document/Portrait.kt
new file mode 100644
index 00000000..acedff0a
--- /dev/null
+++ b/android/app/src/main/java/com/epfl/dedis/hbt/data/document/Portrait.kt
@@ -0,0 +1,24 @@
+package com.epfl.dedis.hbt.data.document
+
+import java.io.Serializable
+
+data class Portrait(
+    val type: String,
+    val data: ByteArray
+) : Serializable {
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as Portrait
+
+        if (type != other.type) return false
+        return data.contentEquals(other.data)
+    }
+
+    override fun hashCode(): Int {
+        var result = type.hashCode()
+        result = 31 * result + data.contentHashCode()
+        return result
+    }
+}
diff --git a/android/app/src/test/java/com/epfl/dedis/hbt/service/document/DocumentServiceTest.kt b/android/app/src/test/java/com/epfl/dedis/hbt/service/document/DocumentServiceTest.kt
new file mode 100644
index 00000000..9958352a
--- /dev/null
+++ b/android/app/src/test/java/com/epfl/dedis/hbt/service/document/DocumentServiceTest.kt
@@ -0,0 +1,57 @@
+package com.epfl.dedis.hbt.service.document
+
+import androidx.test.espresso.matcher.ViewMatchers.assertThat
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import com.epfl.dedis.hbt.data.document.Portrait
+import com.epfl.dedis.hbt.data.user.Role
+import com.epfl.dedis.hbt.data.user.User
+import com.epfl.dedis.hbt.di.HttpModule
+import com.epfl.dedis.hbt.di.JsonModule
+import org.junit.Ignore
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.kotlin.isNull
+import org.mockito.kotlin.notNull
+import java.io.FileNotFoundException
+
+@RunWith(AndroidJUnit4::class)
+class DocumentServiceTest {
+
+
+    companion object {
+        private val retrofit =
+            HttpModule.provideRetrofit(
+                "http://localhost:3000",
+                JsonModule.provideObjectMapper()
+            )
+
+        fun getMockPortrait(): Portrait {
+            val stream = DocumentServiceTest::class.java.getResourceAsStream("/mock-portrait.jpeg")
+                ?: throw FileNotFoundException()
+
+            stream.use {
+                return Portrait("image/jpeg", it.readBytes())
+            }
+        }
+    }
+
+    @Test
+    @Ignore("This is merely a PoC")
+    fun createSimpleDocumentSucceed() {
+        val service = HttpModule.provideDocumentService(retrofit)
+
+        val user = User(
+            name = "Jon Smith",
+            pincode = 24256,
+            passport = "ABCDEFGHI",
+            role = Role.BENEFICIARY
+        )
+
+        val call = service.create(user, getMockPortrait(), false)
+
+        val response = call.execute()
+
+        assertThat(response.errorBody(), isNull())
+        assertThat(response.body(), notNull())
+    }
+}
\ No newline at end of file
diff --git a/android/app/src/test/resources/mock-portrait.jpeg b/android/app/src/test/resources/mock-portrait.jpeg
new file mode 100644
index 00000000..caad2c03
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